Alexis was a full-time Navy reservist from mid-2007 to January 2011.
11:53 a.m. ET -- We now have all the slain victims' names. The latest five to be released by Washington police are:
• Arthur Daniels, 51
• Mary Francis Knight, 51
• Gerald L. Read, 58
• Martin Bodrog, 54
• Richard Michael Ridgell, 52.
On Monday night, Washington police released the first seven names:
• Michael Arnold, 59
• Sylvia Frasier, 53
• Kathy Gaarde, 62
• John Roger Johnson, 73
• Frank Kohler, 50
• Kenneth Bernard Proctor, 46
• Vishnu Pandit, 61.
11:46 a.m. ET -- It's back to baseball Tuesday for the Washington Nationals, who postponed a Monday game as the organization allowed the Navy to use one of its parking lots as a site where Navy Yard evacuees could reunite with their loved ones.
The Nationals will wear their "Patriotic Blue" jerseys in the first game of a double-header with the visiting Atlanta Braves, the team said. The first game, to start at 1:05 p.m., is the makeup for Monday's postponement.
The Navy Yard is just blocks from Nationals Park.
11:30 a.m. ET -- Navy Secretary Ray Mabus on Tuesday will "order reviews of all physical security at all Navy and Marine Corps installations," a U.S. Navy official told CNN's Barbara Starr.
"The first will be a quick look to ensure all physical security requirements are being met. The second will be a deeper review to ensure the right physical and personal security requirements are in place," the official said.