When you have jetpacks that you do not need, walk up to an enemy and turn around to face directly away from your target. Equip a jetpack and aim directly upwards. Fire the jetpack, and then release it after about two seconds. The enemy will receive 20 points of damage from the blast caused by the jetpack hitting the earth, plus any additional damage caused according to where the pig lands. Your pig should land safely by parachute, but try and make him land on an enemy. Do this to inflict 1 point of damage. You can repeat this as many times as needed one turn, providing you have enough jetpacks and do not suffer damage yourself -- using a jetpack does not end a turn.