These drills put you on the firing range with an AI at the shooting range, you goal is to stay alive for 2 minutes gaining 100 points per second, points freeze when you die So you loose 500 points in gain each time you die.
In all incoming fire drills you do not have a weapon and can not kill the firing line spartan.
Examples of the drills
incoming fire drill: sniper
one star
info: puts an ODST level spartan on the firing line, you at long range with little cover. you have access to thrusters on your left and hooks on your right to dodge.
two star
info: puts a spartan level spartan on the firing line, you at long range with only the hooks to your right.
three star
info: spartan level spartan, they have grenades and your only on map cover is physics cover which the AI will try to take out with grenades.
Incoming fire drill: Spnkr
one star
info: ODST level spartan, you have repulser pack with infinite uses.
two star
info: spartan level spartan, you have repulser pack with 1 use, pads for single use are far right and left of range.
three star
info: you don’t have the repulser pack but single use packs spawn at different places on the range.
Incoming fire MA5
one star
info: close range course a lot of cover. ODST bot, fires until needs to reload. thruster packs on your left, grapples on your right.
two star
info: close range course, destructable cover, spartan bot, fires accurate bursts both packs still on map.
three star
info: two spartan level bots, destructable cover is there, same equipment on the map.