A ruined clinic just south of Med-Tek Research, holding the corpse of Knight Varham. It was the site of a Brotherhood battle, and several half-buried and burnt-out power armor suits can be found in the crater in the center of the building.
↑The Sole Survivor: "Is your recon team the first to explore the Commonwealth?" Paladin Danse: "No, far from it. I've been meaning to speak with you about that.The last squad went in three years ago. They never reported back. Officially, they're missing, presumed dead." (Paladin Danse's dialogue)
↑Paladin Danse: "It might surprise you to learn that my recon team isn't the first to visit the Commonwealth. Over the last seven years, two other teams were sent here by the Brotherhood to gather technology. The first team's mission was a huge success. They came back with crates full of pre-war artifacts and historical documents. The second wasn't so fortunate. Shortly after they arrived, we lost contact with them and they haven't been heard from since.As far as my team goes, we've lost four good men to this godforsaken wasteland. We've been a target from the moment we arrived.But despite our setbacks, I don't intend to give up and head home... or end up missing." (Paladin Danse's dialogue)
↑Paladin Danse: "Hold up. Let's assess the site.An explosion tore this building apart. Some kind of high-yield detonation. Look at the blast crater.It's Brotherhood Power Armor. Look, you can still make out the insignia. The recon team was here.The damage... it's deliberate. They set the fusion cores in their armor to overload. That's what caused the blast. But why?Over here. Look." (Paladin Danse's dialogue)