Sorry if anything was unclear.  Lukas and Azrael set out for the crash site via different routes with two companions each.  Irena and the bulk of the Nar-Ghosts stayed in position about 300-400m up one of the Hive spires (and later sent 2 men a little further up to see if they could get a better view).  Derryck went to seek out potential allies, contacted Hrothgar, and then returned to Irena.