BAE Caiman The Caiman is an armored vehicle with a V - hull design based on the Family of Medium Tactical Vehicles ( FMTV ) and Low Signature Armored Cab ( LSAC ) , initially developed by Stewart & Stevenson . Stewart & Stevenson was later acquired in 2005 by Armor Holdings , which developed the Caiman from the FMTV and LSAC designs . Armor Holdings also owned O ' Gara - Hess & Eisenhardt ( which had exclusive rights to the up - armor kits the U . S . Military selected for their Humvees ) and Integrated Textile Systems ( who had an ultra high molecular weight polyethylene fiber called Tensylon that is processed into composite armor ) at the time . BAE Systems acquired Armor Holdings in 2007 , and now develops and manufactures the Caiman as well as the family of Medium Tactical Vehicles it is based on . The Caiman completed testing by the US Military at the Aberdeen Proving Grounds in July 2007 . On 13 July 2007 , Armor Holdings received a prime contract award by the US Navy on the behalf of the US Marine Corps for $ 518 . 5 million under the Mine Resistant Ambush Protected vehicle program . The contract specifies delivery of 1 , 154 Category I MRAP vehicles and 16 Category II MRAP vehicles by the end of February 2008 . It is likely that the Cat I will be based on the LMTV , while the Cat II will be based on the MTV . The Cat I Caiman weighs 14 tons and the Cat II version weighs 24 tons which , according to the Vice President of Armor Holdings , is lighter in weight than its competitors . The work will be performed at BAE Systems M & PS facilities located in Fairfield , Ohio and Sealy , Texas . A reinforced Caiman design submitted by BAE was one of the two eventual winners of the MRAP II competition at the Aberdeen Proving Ground . Caiman features : In September 2010 BAE Systems has been awarded a $ 629 million contract from the U . S . Mine Resistant Ambush Protected ( MRAP ) Joint Program Office ( JPO ) to upgrade 1 , 700 Caiman MRAP vehicles to Caiman Multi - Terrain Vehicle - Caiman MTV standard . The upgraded vehicle integrates a refurbished and improved armored capsule from an existing vehicle with a new high - power automotive power train , chassis and independent suspension made by ArvinMeritor . Greater survivability is achieved through an enhanced monolithic floor , a strengthened chassis frame and better blast absorbing seats . On December 18 , 2011 , a Caiman was part of the last US military convoy out of Iraq , being the last vehicle to cross the border into Kuwait , signifying the end of US military presence and operations in the eight - year Iraq War . In early October 2013 , the Northwest Regional SWAT team of United States received a Caiman 6x6 MRAP . The armored vehicle will primarily be used for rescue situations . In a situation with a gunman , it could be put in between them and personnel . In a natural disaster situation like a flood or blizzard , the Caiman could drive through feet of water or snow and possibly rescue people trapped in their homes . The Caiman normally costs $ 412 , 000 , but was obtained for no cost through a federal program to give surplus military equipment to law enforcement agencies . Northwest Regional SWAT was on a waiting list for over a year for a vehicle before receiving the Caiman .