Modern Warfare 2 - Opening game tactics (tactics you use to get the first blood

I'm sure we've all played with a person in Modern Warfare 2 who at the start of the game will rocket off into one direction and soon after will get the first blood, or be the first blood. After playing extensive hours on MW2 i have found a couple of nice ways to get the first blood.

Map-Quarry
If you start down the bottom and head up the ramp where the explosives are, there is usually one or two people camping. Instead of throwing grenades to try and get the kills or explode the barrels, i throw flashbangs, which no matter how good or bad the throw, will always destroy the barrels and kill the people camping.

Map-Afghan (Domination mostly)
If you start closest to the "B" point then instead of securing B, head down to the ruined airplane with your grenade launcher attachment ready, Throw whatever grenade down there and start shooting grenades. This one requires a lot of luck and precision.

Map-Terminal
Not exactly for first blood but every time i spawn there, i end up with an 11 killstreak soon after. If you start down the bottom, head to ladder and climb it. Prone on top and get ready for the corner straight ahead of you. No doubt there will fire from both sides. Stay patient. There are many signals here that you must look out for. If all dead, be ready for enemies coming around the corner. If your teammates are advancing then they've probably killed all available. Turn to your left to the corridor. It helps to have an acog scope or if sniping a thermal since you will be mashing the button down to the far end of the hallway. Remeber always stay prone and be careful behind you.

I am wandering for some more First Blood tactics so please add some of yours.