An apparatus comprising: a latch comprising a first portion, a second portion, and a ball lock (216, 218), wherein the ball lock (216, 218) is configured to hold the first and second portions (108, 110) of the latch together when the ball lock (216, 218) is engaged, wherein the ball lock (216, 218) is configured to allow the first and second portions (108, 110) of the latch to separate when the ball lock (216, 218) is disengaged; the latch further comprising a shape memory material member configured to fracture when exposed to an elevated temperature and thereby disengage the ball lock (216, 218); wherein: the ball lock (216, 218) comprises at least one ball configured to fit within a recess in the first portion of the latch; the latch further comprises a pin configured to extend through at least part of the second portion of the latch into the recess in the first portion of the latch, the pin also configured to retain the at least one ball within the recess in order to engage the ball lock (216, 218); the second portion of the latch comprises a central body and a holder connected to the shape memory material member, the holder coupled to the central body at a hinge; the latch further comprises a spring configured to push the pin against the holder; the holder is configured, when the shape memory material member fractures, to rotate away from the pin; and the spring is configured, when the shape memory material member fractures, to move the pin out of the recess to disengage the ball lock (216, 218). a latch comprising a first portion, a second portion, and a ball lock (216, 218), wherein the ball lock (216, 218) is configured to hold the first and second portions (108, 110) of the latch together when the ball lock (216, 218) is engaged, wherein the ball lock (216, 218) is configured to allow the first and second portions (108, 110) of the latch to separate when the ball lock (216, 218) is disengaged; the latch further comprising a shape memory material member configured to fracture when exposed to an elevated temperature and thereby disengage the ball lock (216, 218); wherein: the ball lock (216, 218) comprises at least one ball configured to fit within a recess in the first portion of the latch; the latch further comprises a pin configured to extend through at least part of the second portion of the latch into the recess in the first portion of the latch, the pin also configured to retain the at least one ball within the recess in order to engage the ball lock (216, 218); the second portion of the latch comprises a central body and a holder connected to the shape memory material member, the holder coupled to the central body at a hinge; the latch further comprises a spring configured to push the pin against the holder; the holder is configured, when the shape memory material member fractures, to rotate away from the pin; and the spring is configured, when the shape memory material member fractures, to move the pin out of the recess to disengage the ball lock (216, 218). the ball lock (216, 218) comprises at least one ball configured to fit within a recess in the first portion of the latch; the latch further comprises a pin configured to extend through at least part of the second portion of the latch into the recess in the first portion of the latch, the pin also configured to retain the at least one ball within the recess in order to engage the ball lock (216, 218); the second portion of the latch comprises a central body and a holder connected to the shape memory material member, the holder coupled to the central body at a hinge; the latch further comprises a spring configured to push the pin against the holder; the holder is configured, when the shape memory material member fractures, to rotate away from the pin; and the spring is configured, when the shape memory material member fractures, to move the pin out of the recess to disengage the ball lock (216, 218).