He opened the back door of the Humvee, where Mace was trying ease himself out.
There was no soldier inside, so he recovered some ammunition that was in there and brought it back to the Humvee.
I got shot at and I was in a Humvee that was blown up right after my ride.
1983, popularized 1991 in Persian Gulf War military slang, rough acronym for high-mobility multipurpose wheeled vehicle.
A small military vehicle: She and others were traveling in a humvee when one of the Jeeplike vehicles rolled over a mine/ Some 20,000 Humvees were used in the Persian Gulf War
[1990s+; fr high mobility multipurpose wheeled vehicle]