A level 10 Airfield can hold a total of 23 Cobra's with a Space of 20 remaining for other Aircraft.
The Cobra might not have the range of the Hellstorm but it has the advantage of being precise in the elimination of targets and only destroys what is intended, The Hellstorm, with its large Splash Damage, can destroy unintended targets causing "Last Stand Defenders" problems.
The Cobra flies at a higher altitude than theHellstorm, see pic in gallery.
The color of Cobra still exists with a stripe of red(enemy) then blue(your unit).
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Cobras are lightly armored helicopters mounted with twin MG 3 machine guns and the mobility to mow down infantry units.
— In-game description
The Cobra is a light helicopter armed with twin MG 3A1 machine guns, mowing down infantry from above in record time.
— Level 10 description
1st Cavalry Air Division - Your Cobras are ready to strike, Commander. The destruction of enemy infantry will be so delicious.
— Unlock Message
Each pass will grind infantry into red bits of dust.