Update 10 p.m. Thursday:
Another Marine injured in Monday's explosion in Hawthorne at the Army Depot has been released from Renown Regional Medical Center.
One patient remains in serious condition; four are in fair condition. Of the eight originally taken to Renown, one was among the total of seven killed in the explosion and two have been discharged.
HAWTHORNE, Nev. (AP) - The condition of a Marine wounded in a mortar shell explosion that killed seven comrades and injured six others during training in Nevada has been upgraded from serious to fair.
Officials at Reno's Renown Regional Medical Center, at a news conference late Tuesday afternoon, said four Marines are in serious condition, two are in fair condition and another was discharged.
Renown emergency physician Dr. Michael Morkin says some Marines were conscious and "knew something happened but didn't know what."
He says he's "fairly confident" that one of the most seriously injured Marines wouldn't have survived had it not been for the response of a Careflight medical helicopter to the remote site near Hawthorne, about 140 miles southeast of Reno.
Morkin says the Marines mostly suffered blunt force trauma from shrapnel.