USACE HQ:
USACE emergency operations teammate looks over the rubble at Ground Zero after the 9/11 attacks
USACE HQ:
New York City firefighters, police officers spent months sifting through debris at Ground Zero in search of personal items following the 9/11 attacks
USACE HQ:
USACE structural experts kept a constant watch on the heavily damaged structures surrounding Ground Zero
USACE HQ:
249th Engineer Battalion (Prime Power) Soldier stands on the floor of a powered up New York Stock Exchange soon after the 9-11 attacks