The Navy is not certain whether Dorner still possesses any military identification he might try to use to enter a facility.
Investigators said they believe Dorner tried to steal a boat from someone in San Diego, according to the LAPD. Dorner "was not successful, and he fled the location," LAPD Chief Charlie Beck said.
A wallet containing Dorner's identification and an LAPD detective's badge was found near the San Diego airport, police said.
Authorities speculate that Dorner, who is familiar with LAPD policies and procedures, may be trying to lead authorities astray by planting clues.
"He understands the way police departments work: the policies, the procedures, the response times,'" said Brandon Webb, a security expert and editor of SOFREP.com, the Special Operations Forces Situation Report.