While Summit has previously been seen, this video does show off the use of both a sentry gun and dogs. This Call of Duty: Black Ops gameplay is a Team Deathmatch with the the MP5K, where the player manages to get the now 11 killstreak dogs which return from World At War.
Call of Duty: Black Ops will be released for PC, PlayStation 3 and Xbox 360 on November 9th.