Dr. L. Boyd, M.D.., was a doctor working in Los Angeles for the Army (as a doctor). He was also a psychiatrist and had given therapy to Lieutenant Corporal Peter Kerns who had been diagnosed with PTSD. Boyd had to clear him before he could return to active duty. Kerns had told the doctor that he had improved with his symptoms. Boyd had responded by saying that they would discuss options the following week, which obviously meant that Kerns was meeting weekly with Boyd for help. Dr. Boyd was present at the time of the Invasion of Earth and the Battle of Los Angeles (both events happened at the same time), but it is unknown if he survived, because he had played a minor role in the film. Dr. Boyd was portrayed by David Jensen.