The VSSR Simultater is not a credible historical informatio center. In the final weeks before 10:45 A.M. Oct. 23, 2077 General Chase started making radicale, unrealistic changes to the Simulater.
1. There were no Vertibirds in Anchorage
2. There was no T-51b armor in Anchorage, there was actually T-45d armor.
3. The soliders posing for the picture are holding the wrong weapons.
4. There is no evidance of Chimera tanks.

anymore info would be awesome.

http://fallout.wikia.com/wiki/Anchorage_Reclamation

Yup, General Chase was bat[censored] off his rocker.

He also set Braun up in Vault 106; way to go, dude!

Since the F03/FNV loading screen info say that Mister Gutsy's were in use just before the great war I doubt they would have been an actual reinforcement,even if the one in-game was just a prototype.