Maat-ka-re: The Memoirs of a Time Traveler

I was trained as a temporal field agent...With my American teammate, we preserve our current reality...My first drop into the somewhen was, well, quite memorable...We executed a psychotic alien hybrid posing as an Egyptian pharaoh... Tried to rescue four lost seamen in 1942...And stopped an Iranian attempt to alter Western European Civilization...Would you believe they sent an assassination squad to off Charles Martel at the Battle of Tours? The very grandfather of Charlemagne? So that's my day job... What do you do for excitement?