Heli involved is 167879/NH-1 of HSC-6:
http://www.navy.mil/submit/display.asp?story_id=83062
An MH-60S Knighthawk helicopter assigned to Helicopter Sea Combat Squadron (HSC) 6 based at Naval Air Station North Island rolled on its side while landing during a routine training mission near Naval Air Station Fallon, Nevada, at approximately 1430, PDT, Sept. 2.
All five crew members aboard -- two pilots and three enlisted aircrew -- are accounted for and safe with no significant injuries. All five crew members were transported to Naval Air Station Fallon medical facilities for evaluation.
A safety investigation will be convened to determine the cause of the mishap.