Valkyrie Rockets

The  (previously known as Archangel) is a 7-killstreak reward in Call of Duty: Black Ops.

Overview
The "Valkyrie Rocket" is a shoulder-launched rocket that the player fires from a launcher and then guides toward their desired target, but is much more difficult to steer than an RC-XD, since the RC-XD can go forwards and backwards and even stop.

Launched rocket can fly for 15 seconds, or for 5 seconds when boosted. It can explode everywhere the player wants. The controller signal is limited: when a rocket is out of range, player loses vision and control of rocket, and the rocket explodes.

Single Player
The Valkyrie is used during the campaign:
 * In the level "Executive Order" to shoot down Soyuz-2 after the team fails to prevent its launch.
 * In the level "Redemption" to shoot down the 2 Mi-8 Hip helicopters. If the two helicopters were taken down with one rocket, the "Double Whammy" achievement unlocks.

Multiplayer
The Valkyrie Rockets are similar to the Predator Missile from Call of Duty: Modern Warfare 2, albeit requiring 2 more kills. The Valkyrie cannot brake or reverse, but it can be boosted to go faster and if it hits a wall or object, the rocket will explode, possibly resulting in no kills. Upon getting a 7 killstreak, the player is given care package marker which will contain a launcher and two rockets.

Trivia

 * This killstreak was originally going to be awarded for a 5 killstreak, but for an unknown reason was made a 7 killstreak, possibly balance reasons.
 * The rocket itself bears a small resemblance to the Predator Missile and Javelin rocket from Modern Warfare 2.
 * The rocket seems to sway a lot in comparison to the Predator Missile that didn't sway at all. This is still up weighted by the fact that you start with two rockets and is able to shoot down spy planes. The Predator was also able to shoot down an UAV even though it is fired from above.
 * Valkyrie Rockets can also be used to take down enemy Choppers, and enemy spy planes even though it is hard to hit a spy plane as it flies high and is not as big as other flying killstreaks.
 * The Valkyrie Rocket Launcher appears to be a modified Strela-3 with a controlling device attached.
 * Due to technical limitations, the rockets do not appear in the Wii version.
 * Sometimes when firing the Valkyrie rocket it may not be launched but just explode, and when you respawn the player might still have two rockets, as seen in the video here.