One Marine was killed and three injured when their helicopter made an emergency landing in Kaneohe Bay near Honolulu, according to CNN. The three surviving Marines are at Queen's Medical Center in Honolulu, where two are listed in critical condition, and one in stable condition. The Marine Corps has not yet released the name of the Marine who was killed because his or her relatives haven't been notified. According to CNN:
The Department of Defense released this video package about the crash:
Here's additional footage of the crash, courtesy of CNN: