Pain:
Havoc was the guy who usually never tired of teasing his subordinates, his juniors and even his superior officers, should circumstances necessitate. The few people that were the exception (at least, when there were witnesses read unreliable snitches around) included Major General Armstrong because some things were just not worth it, Fuhrer Bradley because the guy gave him the creeps and First Lieutenant Hawkeye, who could glare for Amestris and win.
But on dull and swelteringly hot days like these when his Colonel cast longing looks at the blonde sniper seated across from him, even Havoc could feel Mustang's pain.