the four army national guard members were based out of hannan, louisiana. the seven marines were special operations in north carolina. this is the kind of chopper that we're talking about, a uh-60 blackhawk helicopter. file video of the same kind of chopper here. last night's crash happened over the gulf of mexico. officials say most of the 11 crew members have now been recovered. as you likely know, it will be a very long time to determine the official cause of this crash. but as of right now, officials say there was heavy fog and a low ceiling at the time of the crash. however, we also checked with nbc's weather channel, which reports that at the time of the crash, it was cloudy with light wind and fog developing, but that visibility was fine. no rain, no thunderstorms. about six hours after the crash, the u.s. coast guard discovered the debris field, inchluding th tail rotor. most of the crew members have been recovered. there was a second blackhawk helicopter that was on the same training mission. it managed to return to base safely, so whether or not i