Dean's plan was perfect. As perfect as a plan can be.
Then the the big day came and he packed his things.
Guns, rope, crowbar, glass cutter, high tech stuff for blocking alarms - everything a professional contract killer needs.

He put his favourite Led Zeppelin mixtape in and sang along to the Immigrant Song during the ride to the residence of one of the earth's most important person.

Near the stone building he stopped and took the bag, strolling as near as he could get.
At the entrance he showed the guards his FBI ID (which wasn't even a fake one, since his organisation was able to hack the world's safest systems) knocked the next one out and made his way deeper and deeper into the building.

The man's office was just a corridor, an elevator and another corridor away.
Dean scanned the area and moved forward to the lift. The doors opened, he went in, the door closed.

"What in heavens name are you doing here, Hunter!? This is my Job!"

Dean swirled around.
Next to the door, hidden in the corner stood him - the Angel.