As for what to do with the base, Captain America had originally planned to contact Black Egg directly and let him handle it. Sherlock vetoed that suggestion, however, recommending that they contact Coulson instead.
After all, if they contacted Black Egg directly, Hydra might well reclaim the base and put it back into service after lying low for a while. Contacting Coulson and having him report it to Black Egg would at least give S.H.I.E.L.D. a warning.
Captain America and the others had no objections to Sherlock's arrangements. To them, contacting Coulson or Black Egg amounted to the same thing. They were more interested in figuring out how to get the most value out of this base.
Sherlock wasted no time. He wrote a letter and included a Mustache Pill, then called Coulson, who had just been discharged from the hospital and was still on leave, to ask for his address. After that, he simply tossed the letter and pill through the Anywhere Door.
Coulson had a bad feeling the moment he received Sherlock's call. When he discovered the letter and pill tossed into his home, that feeling reached its peak.
The letter bore the Avengers' signatures, gave an unremarkable address, and repeatedly stressed that he had to take the pill before arriving. After pondering it for a long time, Coulson contacted his friend Agent May, and they requisitioned a plane to head over together.
Following Sherlock's instructions, Coulson took the pill before approaching the base. The moment the guard at the entrance greeted him with "Hi, Coulson!" Agent May nearly drew her gun on him.
Fortunately, their years of friendship, along with the fact that the pill came from Sherlock, Black Egg's Nemesis, allowed Agent May to barely restrain the urge to draw her gun. But once they entered