I will add one perk to each respective field i.e. (Perk 1, Perk 2, Perk 3)
Perk 1:
Anti-personnel mine x 1
a pressure sensitive explosive device which explodes up-wards instantly killing enemies standing within proximity. The item can only be placed in outdoor areas so that it may be covered by leaves, grass, dirt, etc... If activated, any enemies whom are prone or crouched near (not on top) the mine when it is triggered will take significantly less damage.
Perk 2:
Explosive Scavenger
After the player has exhausted his own a lotted explosive weapons he may pickup or re-arm any enemies or team mates unused grenades, claymores, c4, and rpgs. This of course is limited unless otherwise noted by Perk 1 choice i.e. you wouldn't be able to carry 2 x rpg, 3 x grenades, and 2 x claymores unless you chose those for Perk 1. When picking up explosives you can only carry 1 item type until you use it then you may pick up another.
Perk 3:
A Friend in Need is a Friend in Deed
Ever have a gun that your teammate absolutely wanted to use but you couldn't give it to him. This perk allows you to swap weapons with teammates as well as give them extra ammunition if needed. You can swap primary secondary and even explosive or grenade weapons.