I guess I'm more fatalistic than you guys:
M-4 + 5 mags
M-9 + 3 mags
Standard bunch of survival gear (radio, batteries, GPS, assorted signaling devices, compass, etc)
Ditched the standard first aid kit for my own (3x CAT tourniquet, 2x combat gauze, 4x kerlex, 14ga needle catheter, 2x chest seal, combat pill pack, Israeli bandage)
water purifier (miox)
fold up plastic bag type water holder (holds about a gallon)
nalgene water bottle for survival only (full)
tether to secure myself to the outside of a helo (wear a riggers belt)
couple of power bars
compact binoculars
watch cap
nomex fleece outer shell under the seat if it's not super cold (wear it if it's cold)
couple extra IR chem lights
Granted that's only combat, and there's some extra crap on the helo depending on the situation. Home station? Snacks and a cell phone!
Do Army guys wear any kind of harness, like for getting lifted? Also, I'm guessing you don't have to wear any sort of flotation.