RD-77S Sentry Pelican

The Sentry Pelican was an expiremental Pelican used by the UNSC during the battle of Harvest. The RD-77S was a small project that produced 5 Sentry pelicans, 1 never flew due to complications and 2 were destroyed in flight accidents. The last 2 were sent to the Spirit of Fire and never flew during the ships travels except in the last days of the spirit of fire were it helped get the UNSC troopers away from the flood. During the battle, one was shot down and the other was severly damaged but managed to get back to the spirit of fire. After the Spirit of fire dissapeared the last RD-77S was pesumed lost.

Features
The Sentry Pelican was essentially a robotic scouting pelican which was controlled by operators far from the battlefeild such as aboard a starship. The Sentry pelican had all the features of a normal Pelican except it had more advanced weaponry including a missile barrage case, a M1322 heavy machine gun, 4 Archer V25 missiles and an AI controlled rear grenade turret. The 2 Sentry Pelicans were assigned to the 25th air battalion and served with longswords as The Sentry Pelicans engines are much more powerful. The Sentry Pelicans weak point is the rear service door were the main circuit board exists and the Pelican shut down if it is destroyed. Even though the program was explained as a failure, it just might have saved all the Spirit of fire troopers that were ambushed by the flood.