Some time after we started using IR Jammers on the Puma in Northern Ireland many many moons ago, we had a bit of a major problem whilst airborne that required us to dump fuel quickly in order to facilitate a safe landing at a near bye fort (v heavy). A lynx called us to say we were on fire, lots of fire. It turned out that the fuel dump was positioned to get rid of fuel over the Jammer, which was of course super hot and we had 20 foot flames shooting from the back of the aircraft
After a quick re-appraisal and a change of under wear the situation was successfully resolved. make sure the jammers cool before you dump chaps
