Out of uniform (no helmet in a combat-zone) and thus also unsafe, a silly scarf (also out of uniform) to appease idiots. So what happens if an IED hits or a mortar round or whatever, and this person gets injured or killed in a situation where wearing a helmet would have helped?
Also, someone who is injured because they were not wearing a helmet is unsafe to their squad-mates as they are unable to help others in combat and or now take two or three other people to recover their dumb-ass.
I have nothing but contempt for senior leadership that allows something like this to happen.
Caption for linked photo: "U.S. Army Pfc. Kristina Batty dons a headscarf to meet with female Afghan villagers in Afghanistan's southern Ghazni province, May 5, 2012. Batty, a medic for a female engagement team, is assigned to the 82nd Airborne Division’s 1st Brigade Combat Team. U.S. Army photo by Sgt. Michael J. MacLeod"