Sergeant James R. Justus is a character mentioned in Fallout 4.
Sergeant James R. Justus visited the Greater Mass blood clinic in 2077. According to his test results, he was exhibiting a vitamin-D deficiency and a high blood pressure commonly found in others that shared his high-stress technical work. It was recommended that he get some rest and relaxation and a report on his test results was sent to the command's human resources department. 
James R. Justus is mentioned only in Fallout 4.