Bobby looked over the information given to him, he was a bit intimidated by the vast array of details.
The Pentagon is one of the world's largest office buildings. It houses approximately 23,000 military and civilian employees and about 3,000 non-defense support personnel. It has five sides, five floors above ground (plus two basement levels), and five ring corridors per floor with a total of 17.5 miles of corridors. Floors in The Pentagon are lettered "B" for Basement and "M" for Mezzanine, both of which are below ground level. The concourse is located on the second floor at the metro entrance. Above ground floors are numbered 1 to 5. The concentric rings are designated from the center out as "A" through "E" (with addition "F" and "G" in the basement). "E" Ring offices are the only ones with outside views and are generally occupied by senior officials. Security features of this building are highly classified, but said to be the most difficult and time consuming to interrupt or penetrate.
He gave an insecure look to Brian, then wondered if their plan was going to be enough. As if fighting Darkseekers wasn't difficult, let's add the possibility of resistance from one of the most secure buildings in the world. Only time would tell if there was anyone even left. The only reassurance Bobby had was knowing that some of the best X-Men were accompanying him.