The lightweight,standard-issue Humvee is vulnerable to enemy fire and the heavier Mine-Resistant, Ambush-Protected truck,or MRAP, is too top-heavy for steep inclines.

VOA: standard.2010.08.01

"That was reassuring, but it also meant that if you were unidentified you had potential friendly fire not too far away at a moment's notice."

VOA: standard.2010.04.06