Look, look, look.
Point 1: Not all people have common sense do they?
Point 2: To all the other people, the turrets I previously stated were meant to be placed in a demonic ring around the hacking objective, not in a stupid line. <_<
No not all people have common sense but for your argument's sake I would assume everyone knows how to play there role otherwise they would not have come up with a strategy to all be Eng and setup turrets in a circle around the objective.
In which case those turrets would be taken out quickly or be turned against there makers. It would only take 1-2 Operatives at that to defuse that situation. Disguise get close to the turrets drop an EMP grenades in the middle of the circle taking them all out hack a couple to turn on the other ones and destroy the rest that come back online.