(cnn)a black hawk helicopter that went down in waters off the florida panhandle three days ago    killing 11 service members    had aborted a training mission due to bad weather before it crashed, a military official said friday on the same day that officials released the names of the seven marines who were aboard, new details emerged friday on the fatal mission at the santa rosa sound near eglin air force base as officials continue to investigate why the aircraft went down in thick fog tuesday, maj gen joseph l osterman    commander of us marine corps forces special operations command (marsoc)    told reporters that the black hawk was one of two that had to abort exercises involving water 'insertion and extraction techniques' before the crash 'my understanding is  that they were flying as we normally do    two aircraft together,' osterman said 'as they went in, they encountered bad weather and made the decision to wave off and to abort the training mission at that point, the one helicopter obviously made it back and determined that the second helicopter was not back with them in that return' the crash occurred at night    hours after the two helicopters had successfully completed the same training exercise in daylight the black hawk helicopters were training near eglin as heavy fog shrouded the sound    a narrow body of water between mainland northern florida and a barrier island    about 8:30 pm tuesday, the military said 'the fog was moving in and out,' osterman said 'i think they had done the pre assessment before going in, said that everything appeared to be ok, but then    even in route    made the decision (that) the risk was too high' the second helicopter lost communication with the missing aircraft and returned to begin the search operation, osterman said that operation has transitioned from rescue to recovery, with the military focused on recovering the helicopter, military officials said searchers found the helicopter at the bottom of the sound, and the bodies of the seven marines and four army national guard members who were aboard the bodies of at least two national guard members were recovered thursday, and the remains of the other two were believed to be in the underwater wreckage 25 feet below the surface, the guard said the crew members were with 1 244th assault helicopter battalion from hammond, louisiana, according to a statement from the louisiana national guard osterman said the remains will be taken to dover air force base in delaware for identification and forensic examinations before being turned over to the soldiers' families for burial on friday, marsoc, based at camp lejeune, north carolina, identified the seven marines who perished in the crash as capt stanford h shaw, iii, 31, of basking ridge, new jersey; master sgt thomas a saunders, 33, of williamsburg, virginia;  staff sgt marcus s bawol, 26, of warren, michigan; staff sgt trevor p blaylock, 29, of lake orion, michigan; staff sgt liam a flynn, 33, of queens, new york; staff sgt kerry m kemp, 27, of port washington, wisconsin; and staff sgt andrew c seif, 26, of holland, michigan they gave all: profiles of those killed in helicopter crash  the names of the four louisiana national guard members were not released 'to have such a tremendous group of marines    obviously the experience that they had, the cohesion and teamwork and everything else that they exhibited    it definitely hit us all hard by having that many at one time,' osterman said of the deaths the cause of the crash is under investigation mark giuliano, chief of the eglin air force base's fire department, said a couple of military boats already were in the water for safety purposes as part of the exercise but that 'nobody saw anything because of the dense fog' 'people said they heard a loud bang, and that was it,' giuliano said thursday the second black hawk    which, like the first, was assigned to the 1 244th assault helicopter battalion based in hammond, louisiana    safely returned to the base, some 40 miles east of pensacola 'whatever the trouble was with the one aircraft, it did not involve the second helicopter that was participating in the exercise,' eglin spokesman andy bourland said earlier this week giuliano said the fire department, which has a unit on santa rosa island near the crash site, was called to help at about 10 pm tuesday, roughly 90 minutes after the crash the military boats that were part of the mission already had been searching for survivors and wreckage, he said military officials have said it's too early to know whether the fog contributed to the crash the 11 service members, all men, were involved in a seven day training exercise of amphibious operations, said capt barry morris, a spokesman for the us marines corps special operations command it involved small boats, and inserting and extracting marines from the water via helicopter morris would not say which phase of the training the marines were in tuesday night the initial search was hampered by dense fog, to the point that searchers on boats 'could not see,' giuliano said on wednesday morning, after searchers got a sonar hit, a diver found the bulk of the wreck at the bottom of the sound, giuliano said divers then went into the water 'to start retrieving the aircrew,' giuliano said, without specifying how many bodies were recovered the helicopter had broken into several pieces in a 'high impact crash,' he said the coast guard has hired a salvage company from mobile, alabama, to take the wreckage from the water, giuliano said on wednesday, gen martin dempsey, chairman of the joint chiefs of staff, said the crash was 'a reminder to us that those who serve put themselves at risk, both in training and in combat' 'we will work with the services to ensure that  their family members will be well cared for' osterman said the 2,500 marsoc troops have been deployed to afghanistan and other conflict zones during the last eight years    earning seven navy crosses, 19 silver stars, 207 bronze stars and 189 purple hearts 'it is a very tight organization, and many of these marines and sailors associated with marsoc are more senior marines,' osterman said 'their families are all very close in this particular case, they were all from the same team so they were very, very close and everyone immediately rallied together' cnn's ed payne, greg botelho, jason hanna, john newsome, brian carberry, victor blackwell, jamie crawford and brad lendon contributed to this report
black hawk national guard marines
all on the black hawk helicopter were killed in the crash . four national guard aircrew members and seven marines died . crash happened tuesday in foggy conditions 