User blog comment:Callofduty4/Black Ops II Multiplayer Reveal released!/@comment-4279007-20120808194805/@comment-67.224.61.82-20120808233346

In case you guys didn't notice, it takes like 3 seconds to scan for targets, which is more than enough time to sprint in at him and get a kill. For all we know it could be like the backscatter optic of Ghost Recon: Future Soldier and only be able to scan through walls at like 20 feet or closer.