Patent Publication Number: US-11662181-B1

Title: Survivability and assault multi-tool systems and methods

Description:
STATEMENT OF GOVERNMENT INTEREST 
     Under paragraph 1(a) of Executive Order 10096, the conditions under which this invention was made entitle the Government of the United States, as represented by the Secretary of the Army, to an undivided interest therein on any patent granted thereon by the United States. This and related patents are available for licensing to qualified licensees. 
    
    
     BACKGROUND 
     Field of the Invention 
     The present invention relates to combat devices, and more particularly but not exclusively, to fighting position overhead cover or survivability/assault multi-tool (SAM) assemblies and methods for their use and manufacture. 
     Description of the Related Art 
     This section introduces aspects that may help facilitate a better understanding of the invention. Accordingly, the statements of this section are to be read in this light and are not to be understood as admissions about what is prior art or what is not prior art. 
     To protect and enable personnel in conflict and tactical situations, organizations such as the military use a variety of protective and utility devices, including shields, ladders, and the like. 
     Although currently available protection and utility systems provide valuable protection in many instances, still further improvements are desirable. Embodiments of the present invention provide solutions to at least some of these outstanding needs. 
     SUMMARY 
     The present invention was developed to address the challenges described in the Background section. Additional research and further development has led to a novel approach to provide improved survivability/assault multi-tool (SAM) assemblies and methods for use in combat and tactical situations. 
     In some embodiments, a multi-tool system includes four multi-tool assemblies, where each assembly includes a reinforced ballistic panel. A system can include a set of four survivability reinforced ballistic panels that can function independently or linked with other panels to provide a range of protection or mobility functions for dismounted forces in both defensive and offensive operations. Each panel can provide protection from a 7.62×51 round and can be attached with a carrying strap to aid in deployment. In some embodiments, a set of set of four assemblies can stack in a space approximately 3′ long×2′ wide×1′ high to allow for storage on or in combat vehicles. The system can be designed to address various mission sets associated with both defensive and urban operations, including (a) overhead cover, (b) assault shield, (c) assault ladder, and (d) foot bridge. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Embodiments of the invention will become more fully apparent from the following detailed description, the appended claims, and the accompanying drawings in which like reference numerals identify similar or identical elements. 
         FIGS.  1 A and  1 B  depict aspects of an exemplary survivability/assault multi-tool (SAM) assembly, according to certain embodiments of the invention; 
         FIGS.  2 A,  2 B  depict, and  2 C depict aspects of exemplary survivability/assault multi-tool (SAM) assemblies, according to certain embodiments of the invention; 
         FIGS.  3 A and  3 B  depict aspects of exemplary survivability/assault multi-tool (SAM) assemblies, according to certain embodiments of the invention; 
         FIG.  4    depicts aspects of an exemplary survivability/assault multi-tool (SAM) system, according to certain embodiments of the invention; 
         FIGS.  5 A and  5 B  depict aspects of exemplary survivability/assault multi-tool (SAM) systems, according to certain embodiments of the invention; 
         FIGS.  6 A to  6 D  depict aspects of exemplary survivability/assault multi-tool (SAM) assemblies, according to certain embodiments of the invention; 
         FIGS.  7 A to  7 E  depict aspects of exemplary survivability/assault multi-tool (SAM) assemblies, according to certain embodiments of the invention; and 
         FIG.  8    depicts aspects of an exemplary survivability/assault multi-tool (SAM) system, according to certain embodiments of the invention. 
     
    
    
     DETAILED DESCRIPTION 
     Detailed illustrative embodiments of the present invention are disclosed herein. However, specific structural and functional details disclosed herein are merely representative for purposes of describing example embodiments of the present invention. The present invention may be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein. Further, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments of the invention. 
     As used herein, the singular forms “a,” “an,” and “the,” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It further will be understood that the terms “comprises,” “comprising,” “includes,” and/or “including,” specify the presence of stated features, steps, or components, but do not preclude the presence or addition of one or more other features, steps, or components. It also should be noted that in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may in fact be executed substantially concurrently or may sometimes be executed in the reverse order, depending upon the functionality/acts involved. 
     Turning now to the drawings,  FIGS.  1 A and  1 B  depict aspects of a multi-tool assembly  10 , according to embodiments of the present invention. As shown here, assembly  10  includes a first side support  100 , a second side support  110 , and a middle rung or fixed rung  120  disposed between and in fixed connection with the first and second side supports. Assembly  10  further includes a swing arm or folding rung  130  in pivoting association with the first and second side supports, a sliding arm or sliding rung  140  in sliding association with the first and second side supports, a panel  150  coupled with the first and second side supports, and an arm strap  160  coupled with the panel. Second side support  110  includes an aperture  112 . In use, a person can slide their right or left arm through the arm strap  160  and, with the hand of that arm, grasp a handle portion that is provided by an aperture  112  in the second side support  110 . Second side support  110  may also include or be coupled with a support plate  117 , which can provide reinforcement or additional load-bearing capabilities to the second side support  110 . 
     Overhead Cover 
     One or more assemblies can be used for individual fighting positions. In some embodiments, a panel extends to approximately 5′ to form a cover for a standard individual fighting position. The extension allows for bearing on the soil banks required to support the assembly across the fighting position for both soil cover and blast loads from indirect fires primarily mortars. The extension can be achieved by having the ladder rung support arm or sliding rung  140  slide out from one end of the assembly and rotating the swing arm or folding rung  130  at the other end with fixed positioning at either 90° or 180° relative to the side supports. An individual panel  150  can provide immediate ballistic protection from air burst fragmentation equivalent to the 7.62×51. The panel(s) can be covered with soil or sandbags to increase protection from both fragmentation and contact burst from medium mortars. Assemblies can be paired together to provide the desired cover for a two soldier fighting situation. In some cases, a panel  150  can provide a coverage area of 36″ by 20″. 
     As shown in the side view provided by  FIG.  2 A  and the top plan view provided by  FIG.  2 B , one or more assemblies  10  can be placed across a foxhole or trench  12 . In this configuration, the sliding rung  140  is extended, and the folding rung  130  is unfolded. Sandbags  15  can be placed on top of the panel  150 . As shown in the top plan view provided by  FIG.  2 B , two assemblies  10  can be placed side by side over a foxhole or trench  12 . This configuration can provide a fixed rail structure, and can hold additional sandbags on top. Such sandbags are helpful for protecting individuals under the assemblies from contact bursts, mortar rounds, and the like, operating to absorb blast impacts, and improving survivability. In some cases, the panels may provide protection from ballistic impacts, and may include a Kevlar material for ballistic protection. Assembly components can be manufactured from aluminum, or other strong and light materials. As shown in the side view provided by  FIG.  2 C , the folding rung  130  can be folded to a 90° orientation relative to the side supports, and one or more assemblies  10  in this configuration can be placed over a foxhole or trench to allow an individual to view or fire forward from under the assembly or assemblies. As shown here, the sliding rung  140  is placed upon a spoil  141 . 
       FIG.  2 A  depicts a standard fighting position, where the folding run  130  is folded to 180° and the sliding rung  140  is slide out. In some cases, this results in a 57″×20″ cover section. Two or more assemblies can be used to form a cover as shown in  FIG.  2 B .  FIG.  2 C  depicts a single firer application, where the folding rung  130  is folded to 90°, and the sliding rung  140  is extended, allowing for firing from under the cover. Here, the two rungs  130 ,  140  bear on or are in contact with the soil. The panel dimensions can be sized so as to provide sufficient cover over both sides of a foxhole or fighting position. One or more panels can operate as a shielding portion, providing immediate protection and/or overhead cover using light ballistic materials. 
     Method embodiments for operating a survivability and assault multi-tool assembly can include slidably moving a sliding rung of the multi-tool assembly relative to a first side support and a second side support of the multi-tool assembly, fixing the sliding rung of the multi-tool assembly relative to the first side support and the second side support of the multi-tool assembly, pivotably moving a folding rung of the multi-tool assembly relative to the first side support and the second side support of the multi-tool assembly, and fixing the folding rung of the multi-tool assembly relative to the first side support and the second side support of the multi-tool assembly. In some cases, the step of fixing the sliding rung of the multi-tool assembly relative to the first side support and the second side support of the multi-tool assembly includes inserting a first pin through an aperture of a first lateral support of the sliding rung and through an aperture of the first side support, and inserting a second pin through an aperture of a second lateral support of the sliding rung and through an aperture of the second side support. In some cases, the step of fixing the folding rung of the multi-tool assembly relative to the first side support and the second side support of the multi-tool assembly includes inserting a first pin through an aperture of a first hinge post of the folding rung and through an aperture of the first side support, and inserting a second pin through an aperture of a second hinge post of the folding rung and through an aperture of the second side support. In some cases, the step of fixing the folding rung of the multi-tool assembly relative to the first side support and the second side support of the multi-tool assembly includes fixing a first lateral support of the folding rung at a 90° angle relative to the first side support, and fixing a second lateral support of the folding rung at a 90° angle relative to the second side support. In some cases, the step of fixing the folding rung of the multi-tool assembly relative to the first side support and the second side support of the multi-tool assembly includes fixing a first lateral support of the folding rung at a 180° angle relative to the first side support, and fixing a second lateral support of the folding rung at a 180° angle relative to the second side support. In some cases, the step of fixing the folding rung of the multi-tool assembly relative to the first side support and the second side support of the multi-tool assembly includes fixing a first lateral support of the folding rung at a 0° angle relative to the first side support, and fixing a second lateral support of the folding rung at a 0° angle relative to the second side support. 
     Assault Shield 
     In some cases, an assembly  10  can be used as an assault shield, as depicted in  FIG.  3 A . For example, a person can slide their arm through the arm strap  160  and, with the hand of that arm, grasp a handle portion that is provided by an aperture  112  in the second side support  110 , and hold the assembly  10  in front of their body. In some cases, such use may be desired for an urban operation. In this sense, an assembly  10  can function independently as an assault shield. One support rail or side support is fitted with a handhold and an arm strap is attached to the ballistic panel for stability and centered on the panel. This allows the assembly  10  to operate as a shield to be used for both right and left hand operations simply by rotating the assembly 180°. Rotating the support arm or folding arm  130  at 90° allows the assembly to be self-supporting to support both prone and kneeling positions and the reinforcement of walls in an urban environment, as depicted in  FIG.  3 B , where the assembly  10  is placed on the floor beneath a window W. In this way, an assembly  10  can provide an urban wall ballistic reinforcement. 
     Assault Ladder 
     In some cases, an assembly  10  can be used as an assault ladder, and relatedly, multiple assemblies  10  can be coupled together to operate as an assault ladder  5 , as depicted in  FIG.  4   . In some cases, multiple assemblies can be pinned together to provide an assault ladder. Each assembly can provide a 3 rung 3′ ladder to support breaching low walls and a carrying strap can enable retrieval of the ladder. The individual assemblies can be pinned together form taller ladders. A set of four assemblies can provide for ladder lengths ranging from 3′, 6′, 9′ and 12′. A 12′ ladder can be capable of carrying a load of 300 pounds. Additional assemblies can be added to provide taller ladders at reduced load capacity. The ballistic panel offers protection from frontal fires while scaling the ladder. Portions of the ladder steps or rungs which operate as the stepping surfaces can include a textured material or surface for improved performance. For example, the top surfaces of the rungs can include plank grating or skid resistant treads, or may have a diamond deck textured surface. According to some embodiments, a survivability and assault multi-tool system can be provided as a ladder  5 , and can include a first multi-tool assembly  10  having a first side support, a second side support, a panel, and a sliding rung having a first lateral support and a second lateral support. The ladder can also include a second multi-tool assembly  10  having a first side support, a second side support, a panel, and a folding rung having a first lateral support and a second lateral support. The first lateral support of the sliding rung can be slidably received by the first side support of the first multi-tool assembly and the second lateral support of the sliding rung is slidably received by the second side support of the first multi-tool assembly. The first lateral support of the sliding rung can be slidably received by the first side support of the second multi-tool assembly and the second lateral support of sliding rung can be slidably received by the second side support of the second multi-tool assembly. The first lateral support of the folding rung can be pivotably coupled with the first side support of the second multi-tool assembly and the second lateral support of the folding rung can be pivotably coupled with the second side support of the second multi-tool assembly. A first pin of the first multi-tool assembly can be configured to fix the first lateral support of the sliding rung relative to the first side support of the first multi-tool assembly, and a second pin of the first multi-tool assembly can be configured to fix the second lateral support of the sliding rung relative to the second side support of the first multi-tool assembly. A first pin of the second multi-tool assembly can be configured to fix the first lateral support of the folding rung relative to the first side support of the second multi-tool assembly, and a second pin of the second multi-tool assembly can be configured to fix the second lateral support of the folding rung relative to the second side support of the second multi-tool assembly. In some cases, a panel of the first multi-tool assembly abuts the panel of the second multi-tool assembly when the first multi-tool assembly and the second multi-tool assembly are coupled together. 
     Foot Bridge 
     In some cases, an assembly  10  can be used as a foot bridge, and relatedly, multiple assemblies  10  can be coupled together to operate as a foot bridge  2 , as depicted in  FIGS.  5 A and  5 B . The ladder  2  can be extended across a gap with the ballistic panels facing upward, to operate as a crossing deck. A 12′ foot bridge can support the crossing of a soldier with body army (approximately 300 pounds). For a higher loading or longer gaps, the bridge function can be reinforced by creating “king post” supports by rotating the swing arm or folding rung  130  to the 90° position and attaching the carrying straps  170  to the folding arm  130  and fixed ladder rungs to provide a post tensioned support to the bridge. According to some embodiments, a survivability and assault multi-tool system can be provided as a foot bridge  2 , and can include a first multi-tool assembly  10  having a first side support, a second side support, a panel, and a sliding rung having a first lateral support and a second lateral support. The foot bridge can also include a second multi-tool assembly  10  having a first side support, a second side support, a panel, and a folding rung having a first lateral support and a second lateral support. The first lateral support of the sliding rung can be slidably received by the first side support of the first multi-tool assembly and the second lateral support of the sliding rung is slidably received by the second side support of the first multi-tool assembly. The first lateral support of the sliding rung can be slidably received by the first side support of the second multi-tool assembly and the second lateral support of sliding rung can be slidably received by the second side support of the second multi-tool assembly. The first lateral support of the folding rung can be pivotably coupled with the first side support of the second multi-tool assembly and the second lateral support of the folding rung can be pivotably coupled with the second side support of the second multi-tool assembly. A first pin of the first multi-tool assembly can be configured to fix the first lateral support of the sliding rung relative to the first side support of the first multi-tool assembly, and a second pin of the first multi-tool assembly can be configured to fix the second lateral support of the sliding rung relative to the second side support of the first multi-tool assembly. A first pin of the second multi-tool assembly can be configured to fix the first lateral support of the folding rung relative to the first side support of the second multi-tool assembly, and a second pin of the second multi-tool assembly can be configured to fix the second lateral support of the folding rung relative to the second side support of the second multi-tool assembly. In some cases, a panel of the first multi-tool assembly abuts the panel of the second multi-tool assembly when the first multi-tool assembly and the second multi-tool assembly are coupled together. 
     Sliding Rung 
       FIG.  6 A  depicts aspects of a sliding rung  140 , according to embodiments of the present invention. As shown here, sliding rung  140  includes a first lateral support  142 , a second lateral support  144 , and a sliding step  146  disposed between the first and second lateral supports. According to some embodiments, the sliding step  146  is coupled with the first lateral support  142  and the second lateral support  144  of the sliding rung  140 . First lateral support  142  includes a proximal aperture  142 A, a central aperture (not shown), a distal aperture  142 C, and a distal slot  142 D. Second lateral support  144  includes a proximal aperture  144 A, a central aperture  144 B, a distal aperture  144 C, and a distal slot  144 D. 
     When the sliding rung  140  is positioned in the retracted position, as illustrated in  FIG.  6 B , the first lateral support  142  can be fixed relative to the first side support  100  via a first pin  183  and the second lateral support  144  can be fixed relative to the second side support  110  via a second pin  184 . For example, the side supports may have apertures that are configured to receive the pins. Hence, a first lateral support  142  of the sliding rung can have an aperture, a second lateral support  144  of the sliding rung can have an aperture, a first side support  100  can have an aperture, a second side support  110  can have an aperture, and a survivability and assault multi-tool assembly can further include a first sliding rung pin and a second sliding rung pin, where the first sliding rung pin is positioned within the aperture of the first lateral support  142  of the sliding rung and within the aperture of the first side support  100 , and where the second sliding rung pin is positioned within the aperture of the second lateral support  144  of the sliding rung and within the aperture of the second side support  110 . The first lateral support  142  of the sliding rung can be slidably received by the first side support  100 , and the second lateral support  144  of the sliding rung can be slidably received by the second side support  110 . 
       FIG.  6 C  shows a second side support  110  having a sliding end aperture  111  (or set of apertures  111 ), a folding end distal aperture  113  (or set of apertures), a folding end central aperture  114  (or set of apertures), and a folding end proximal aperture  115  (or set of apertures). Hence, a second pin  184  (as depicted in  FIG.  6 B ) can be inserted through a central aperture  144 B of a sliding rung  140  (as depicted in  FIG.  6 A ) and also through a set of sliding end apertures  111  of a second side support  110  (as depicted in  FIG.  6 C ). A first pin can be inserted through a central aperture of a sliding rung and also through a set of sliding end apertures of a first side support, in an analogous fashion. 
     With returning reference to  FIG.  6 B , to extend the sliding rung  140 , the pins  183 ,  184  can be removed, and the sliding rung  140  can be advanced distally as indicated by arrow A. When, for example, the proximal aperture  144 A (or apertures) as depicted in  FIG.  6 A  is aligned with the sliding end aperture  111  (or set of apertures  111 ) as depicted in  FIG.  6 C , the second pin  184  can be inserted through the apertures  144 A,  111  so as to lock or fix the sliding rung in the extended position. A first pin can be inserted through a proximal aperture of a sliding rung and also through a set of sliding end apertures of a first side support, in an analogous fashion.  FIG.  6 D  depicts the sliding rung  140  in the extended position. The proximal apertures (not shown) of the first lateral support  142  and the proximal apertures (not shown) of the second lateral support  144  are aligned with the sliding end apertures (e.g.  111 ) of the first side support  100  and second side support  110 , respectively. The first lateral support  142  can be fixed relative to the first side support  100  via a first pin  183  and the second lateral support  144  can be fixed relative to the second side support  110  via a second pin  184 . 
     Folding Rung 
       FIG.  7 A  depicts aspects of a pivoting connection or coupling between a folding rung  130  and a second side support  110 , according to embodiments of the present invention. As shown here, folding rung  130  can be coupled with second side support  110  via a hinge  180 . In some cases, hinge  180  includes a hinge post  182 , a hinge plate  185 , and a hinge bearing  186 . In the embodiment depicted here, it can be seen that the lateral support  132  of the folding rung  130  can be fixed at a 0° angle relative to the side support  110  of the multi-tool assembly (e.g. in contrast to the 90° angle depicted in  FIG.  7 C  and the 180° angle depicted in  FIG.  7 D ). According to some embodiments, a first hinge post can be pivotably coupled with a first side support via a first hinge bearing, and a second hinge post can be pivotably coupled with the second side support via a second hinge bearing. 
     In the disassembled view depicted in  FIG.  7 B , it can be seen that second side support  110  includes a folding end distal aperture  113  (or set of apertures), a folding end central aperture  114  (or set of apertures), and a folding end proximal aperture  115  (or set of apertures). The hinge plate  185  includes a distal aperture  185 A (for alignment with folding end distal aperture  113  of second side support  110 ), a central aperture  185 B (for alignment with folding end central aperture  114  of second side support  110 ), a proximal aperture  185 C (for alignment with folding end proximal aperture  115  of second side support  110 ), an upper aperture  185 D that is disposed toward a panel (not shown), and a lower aperture  185 E that is disposed away from the panel. 
     In some cases, the second side support  110  may include connection points or apertures  119  that, in concert with connection points or apertures  189  of the hinge plate  185 , operate to provide a fixed connection between the second side support  110  and the hinge plate  185 . For example, one or more rivets or bolts/nuts can be used to provide the fixed connection. 
     Hinge bearing  186  includes a lateral cap  186 A, a medial cap  186 B, and an axle  186 C therebetween. Hinge post  182  includes a distal aperture  182 A, a central aperture  182 B, a proximal aperture  182 C, and an upper aperture  182 D. In some cases, the folding rung  130  may include connection points or apertures  139  that, in concert with connection points or apertures  188  of the hinge post  182 , operate to provide a fixed connection between the folding rung  130  and the hinge post  182 . For example, one or more rivets or bolts/nuts can be used to provide the fixed connection. The hinge bearing  186  can be engaged with the second side support  110 , hinge plate  185 , and hinge post  182 , so that the central axle  186 C is disposed within the folding end central aperture  114  (or set of apertures) of second side support  110 , within the central aperture  185 B of the hinge plate  185 , and within the central aperture  182 B of the hinge post  182 . 
     When the folding rung  130  is in the retracted or folded position, the proximal aperture  182 C of the hinge post  182  is aligned with the proximal aperture  1850  of the hinge plate  185  (and also with the proximal aperture  115  of second side support  110 ) and a second pin  194  (as depicted in  FIG.  7 A ) can be inserted therethrough. 
     When the folding rung  130  is in the partially retracted or partially unfolded position, the upper aperture  182 D of the hinge post  182  is aligned with the proximal aperture  1850  of the hinge plate  185  (and also with the proximal aperture  115  of second side support  110 ) and a second pin  194  can be inserted therethrough. For example, as depicted in  FIG.  7 C , the second lateral support  132  of the folding rung  130  is at a 90° angle with the second side support  110 , and the second pin  194  is positioned through the upper aperture  182 D of the hinge post  182 . The combination of the hinge bearing  186  and the pin  194  provides a moment connection. 
     When the folding rung  130  is in the un-retracted or fully unfolded position, the distal aperture  182 A of the hinge post  182  is aligned with the proximal aperture  185 C of the hinge plate  185  (and also with the proximal aperture  115  of second side support  110 ) and a second pin  194  can be inserted therethrough. For example, as depicted in  FIG.  7 D , the second lateral support  132  of the folding rung  130  is at a 180° angle with the second side support  110 , and the second pin  194  is positioned through the distal aperture  182 A of the hinge post  182 . 
     The folding rung  130  can be rotated to the desired position (folded, partially folded/unfolded, or unfolded) by rotating the hinge post  182  (and by extension, the folding rung  130 ) about the pivoting axis provided by the hinge bearing  186 . 
       FIG.  7 E  depicts aspects of a folding rung  130 . As shown here, folding rung  130  can include a first lateral support  131 , a second lateral support  132 , and a folding step  133 . According to some embodiments, the folding step  133  can be coupled with the first lateral support  131  and the second lateral support  132  of the folding rung  130 . Second lateral support  132  includes connection points or apertures  139  that, in concert with connection points or apertures of a hinge post, can secure the second lateral support with the hinge post. First lateral support  131  includes similar connection points or apertures. 
     Joined Assemblies 
     When two assemblies  10 - 1 ,  10 - 2  are joined or coupled, as depicted in  FIG.  8   , the first side supports  100 - 1  and  100 - 2  are aligned, the second side supports  110 - 1  and  110 - 2  are aligned, and the panels  150 - 1  and  150 - 2  abut one another. The first side support  100 - 2  of assembly  10 - 2  receives the first lateral support  142 - 1  of assembly  10 - 1 . The second side support  110 - 2  of assembly  10 - 2  receives the second lateral support  144 - 1  of assembly  10 - 1 . Pin  183 - 1  fixes first side support  100 - 1  relative to first lateral support  142 - 1 , and pin  184 - 1  of assembly  10 - 1  fixes second side support  110 - 1  relative to second lateral support  144 - 1 . Pin  192 - 2  fixes first side support  100 - 2  relative to first lateral support  142 - 1 . Pin  194 - 1  fixes second side support  110 - 2  relative to second lateral support  144 - 1 . A distal slot (not shown) of first lateral support  142 - 1  receives hinge bearing  187 - 2 , and a distal slot (not shown) of second lateral support  144 - 1  receives hinge bearing  186 - 2 . Pin  192 - 2  passes through a distal aperture (not shown) of first lateral support  142 - 1 , and pin  194 - 2  passes through a distal aperture (not shown) of second lateral support  144 - 1 . Hence, a first lateral support  142 - 1  of a folding rung can include an aperture, a second lateral support  144 - 1  of the folding rung can include an aperture, a first side support can include an aperture, and a second side support can include an aperture. A survivability and assault multi-tool assembly can include a first folding rung pin and a second folding rung pin, where the first folding rung pin is positioned within the aperture of the first lateral support  142 - 1  of the folding rung and within the aperture of the first side support, and where the second sliding rung pin is positioned within the aperture of the second lateral support  144 - 1  of the folding rung and within the aperture of the second side support. 
     Unless explicitly stated otherwise, each numerical value and range should be interpreted as being approximate as if the word “about” or “approximately” preceded the value or range. 
     Unless otherwise indicated, all numbers expressing quantities of ingredients, properties such as molecular weight, percent, ratio, reaction conditions, and so forth used in the specification and claims are to be understood as being modified in all instances by the term “about,” whether or not the term “about” is present. Accordingly, unless indicated to the contrary, the numerical parameters set forth in the specification and claims are approximations that may vary depending upon the desired properties sought to be obtained by the present disclosure. At the very least, and not as an attempt to limit the application of the doctrine of equivalents to the scope of the claims, each numerical parameter should at least be construed in light of the number of reported significant digits and by applying ordinary rounding techniques. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the disclosure are approximations, the numerical values set forth in the specific examples are reported as precisely as possible. Any numerical value, however, inherently contains certain errors necessarily resulting from the standard deviation found in their respective testing measurements. 
     It will be further understood that various changes in the details, materials, and arrangements of the parts which have been described and illustrated in order to explain embodiments of this invention may be made by those skilled in the art without departing from embodiments of the invention encompassed by the following claims. 
     In this specification including any claims, the term “each” may be used to refer to one or more specified characteristics of a plurality of previously recited elements or steps. When used with the open-ended term “comprising,” the recitation of the term “each” does not exclude additional, unrecited elements or steps. Thus, it will be understood that an apparatus may have additional, unrecited elements and a method may have additional, unrecited steps, where the additional, unrecited elements or steps do not have the one or more specified characteristics. 
     It should be understood that the steps of the exemplary methods set forth herein are not necessarily required to be performed in the order described, and the order of the steps of such methods should be understood to be merely exemplary. Likewise, additional steps may be included in such methods, and certain steps may be omitted or combined, in methods consistent with various embodiments of the invention. 
     Although the elements in the following method claims, if any, are recited in a particular sequence with corresponding labeling, unless the claim recitations otherwise imply a particular sequence for implementing some or all of those elements, those elements are not necessarily intended to be limited to being implemented in that particular sequence. 
     All documents mentioned herein are hereby incorporated by reference in their entirety or alternatively to provide the disclosure for which they were specifically relied upon. 
     Reference herein to “one embodiment” or “an embodiment” means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase “in one embodiment” in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments necessarily mutually exclusive of other embodiments. The same applies to the term “implementation.” 
     The embodiments covered by the claims in this application are limited to embodiments that (1) are enabled by this specification and (2) correspond to statutory subject matter. Non-enabled embodiments and embodiments that correspond to non-statutory subject matter are explicitly disclaimed even if they fall within the scope of the claims.