Top Secret Information: Do Not Read

Since this is possibly a sensitive subject, all of the names in this story have been changed to protect the innocent.
Someone I know was walking down a particular hallway.
This is a particular hallway well-known to I and said someone.
Someone, let's call him "Larry," opened a door along this hallway.
Larry was going to say hi to the person(s) in the room.
This is not unusual.
I was ten feet or so behind Larry when...
Larry opens the door quickly, gasps, "OH SORRY"
Larry walks outside as I walk past the door, which opens...
to a half-dressed individual with smile. Confusion sets in.
I catch up to Larry outside.
"What was that about?"
"That guy was