On Titanic Tuesday the dar bars always get buggy during prime time and you cant tell if there is an enemy around or not. Dar dots showup where you shouldnt be able to see enemy on dar and squaddies on squad highlight might show up several sectors from where they actually are. I think in the case of squad highlight they stick where you last saw them until you come into direct contact again. Dar bars may show up in a sector that actually has no friendly or enemies either one.