The CH-46 makes three appearances in the campaign. In U.S.D.D. as the helicopter which transport Alex Mason to the Pentagon, in S.O.G. as a few of the helicopters taking off and flying in the beginning and in Redemption where several of them are seen flying above the US Navy ships.
Like the MH-6 Little Bird helicopter in Call of Duty: Modern Warfare 2 multiplayer, it drops SAM Turrets, Care Packages, Sentry Guns and Valkyrie Rockets. However, the helicopter is much slower and can be destroyed easily as a result. If destroyed, the crate will fall and land below where the helicopter was destroyed. As with other helicopter-based killstreaks in Black Ops, the CH-46's paint scheme will vary depending on whether it is operated by friendly or enemy forces. It will reward 300 XP upon destroying it, whether it was a care package, SAM Turret, Sentry Gun, or Valkyrie Rocket crate that it was carrying when it was shot down.
Part of a crashed Chinook can appear as debris in the player's base.
Modern Warfare series
If looking carefully through the cockpit windows of the CH-46 which rescues Price and MacMillan during the mission "One Shot, One Kill", the player will notice that the pilot and co-pilot seats are empty.
In Call of Duty: Modern Warfare 2's multiplayer map Rust, a destroyed Sea Knight can be seen far outside the map next to a river.
The pilot of the Sea Knight that extracts Frost and Sandman in "Hunter Killer" is incorrectly referred to as "Chinook Pilot" in the subtitles.
Black Ops series
Originally the CH-46 had see-through windows and even a partly visible crew as seen in the killstreak selection menu.
In Theater Mode, the Sea Knight is poorly detailed, and only has a rear loading ramp.
Notice in the video below that a part of the explosion features a tail rotor, which a Sea Knight does not have.
Sea Knights are the only helicopters that can come when other helicopters are present.
After dropping a reward crate, it can move fast enough to avoid a locked-on rocket.
Shooting at enemy Sea Knights is a great way to unlock Hardened Pro, as the helicopters are a large target and are stationary when dropping the crate.
In the mission SOG there are green Sea Knights that bear the fin flash ET and VMM-262 "Flying Tigers" a Marine Corps helicopter squadron is based in Okinawa that saw service in Vietnam.