Four Dead in 2nd Naval Base Shooting this Week

For the second time this week, a gunman has opened fire at a U.S. Naval base. The latest incident occurred Friday morning at Naval Air Station Pensacola in Florida, officials say. The shooter, identified as Mohammed Saeed Alshamrani -- a member of the Saudi Air Force and an aviation student at the base -- is among the four people who died in the incident, according to Navy officials. Several others, including two sheriff's deputies, were injured.