Prof. Jana has taught US  history, espionage, military intelligence and film courses at colleges and universities, mostly  in Southern California, since 1978. He has also taught aboard Navy warships around the world and while in Normandy,  visiting the sites of D-Day, he developed  a series of  D Day and WW II presentations which he now gives to groups. He continues to teach college history courses to US marines and sailors at Camp Pendleton.