Timeline for See players through walls as red shadows?

7 events

when toggle format	what		by	license	comment
Jan 12, 2015 at 20:40	comment	added	user973		Please note that in multiplayer, players using the Cold Blooded perk are immune to threat detection from UAV and threat grenades.
Nov 10, 2014 at 13:57	comment	added	rdurand		The threat detection module on a UAV works almost exactly as the threat detection grenade. So does the recon drone (another scorestreak), with which you can throw threat detection grenades to mark enemies.
Nov 10, 2014 at 11:12	comment	added	Lasse V. Karlsen		I doubt what I'm describing and asking about is the threat grenade then since it looks completely different. The "shadows" that I describe are precisely the 3d models of the enemy players as they run around on the map, seen through walls. It sounds much more plausible that this is the UAV module that @cloudymusic mentions.
Nov 10, 2014 at 8:24	comment	added	rdurand		Also note that the screenshot is from the singleplayer, not the multiplayer. I find it extremely harder to mark enemies with the threat detection grenade in multiplayer. Also, perks exist in multiplayer to counter the effect of threat grenades.
Nov 10, 2014 at 3:13	comment	added	Cloudy		In addition to threat grenades, this can also happen if a friendly player deploys the UAV scorestreak with the Threat Detection module installed.
Nov 10, 2014 at 2:18	history	edited	Kevin Reid	CC BY-SA 3.0	fix grammar and quotes
Nov 9, 2014 at 23:18	history	answered	Chantola	CC BY-SA 3.0