Helo shot down at speed of 150mph...

[iCaMpWiThAWP]

When you find IEDs you have to ways to act:
1.Avoid, If you can't spare an engineer unit to disarm it, just go past it, but don't touch it, be extra carefull if versus a human opponent, they may have an ambush there, snipers can be nasty

2.Disarm, only do it if it blocks a path, you need, first, get scouts 2-3 hexes near it then spread out looking for snipers and ambush, now, if you can spare a mortar tube, bombard suspected enemy hiding spots, OR smoke directly over the bomb if in a clear area, now, move infantry to secure the area then move engineer to disarm, takes some 4 to 5 turns to do if you have teams ready for that near the area, long, but safe, you don't want a retreating unit to enter that hex