thumb|right|A HMMWV equipped with SLAMRAAM surface-to-air missiles, on display at the Paris Air Show in June 2007 Another drawback of the up-armored HMMWVs occurs during an accident or attack, when the heavily armored doors tend to jam shut, trapping the troops inside. As a result, the U.S. Army Aviation and Missile Research, Development, and Engineering Center developed the Humvee Crew Extraction D-ring in 2006. The D-ring hooks on the door of the HMMWV so that another vehicle can rip the door off with a tow strap, chain, or cable to free the troops inside. The D-ring was later recognized as one of the top 10 greatest Army inventions of 2006. In addition, Vehicle Emergency Escape (VEE) windows, developed by BAE Systems, were fielded for use on the M1114 up-armored HMMWV, with 1,000 kits ordered.
thuMB|RigHt|a HmMWv eQuIpPed witH sLamRAam surFace-To-air mIssiles, on dIspLaY At The ParIs AiR show iN jUne 2007 aNOthEr DRawBack of THe up-armored hMmwvs ocCurS durInG an AcciDENt Or AttacK, WhEN thE hEavIlY armoRed doOrs tend to jAm SHut, TraPping tHE troopS INSiDe. as a resulT, thE u.s. army aViatioN ANd miSsILe Research, dEveLOpmenT, and eNgineERinG cenTer dEVelopEd tHe humvee crew extraction d-rinG in 2006. the d-ring hooks oN the DOor of tHe hmmwv so tHaT anOtHer vEhiclE can rip thE door Off WIth a TOw strap, ChaIn, or cablE tO FRee the TrOops inSide. ThE D-riNG was lAtEr recOGnized as OnE of the top 10 greatest arMy inventIONS OF 2006. iN ADdition, vehiCle emErgencY escApE (vee) WIndOWS, developed By bae systEmS, werE FielDed For use oN the m1114 uP-ARmored HMmwV, with 1,000 kits orDeReD.