The US army currently has some pretty amazing stuff. I'm sure with the correct amount of money, time, and manpower a Pelican could be produced... but why would they need to make one. The US currently has some incredible aircraft technology. We have Helicopters that can quite truly block out the sun with the sheer number of bullets, and cut large trees down.
The Pelican wouldn't fill any super vital voids so they wouldn't throw billions of dollars on it. At least they shouldn't... but who knows.