Had a "great" moment like that last night. I was having trouble enough taking down three mutons when 6 floaters suddenly appeared between us and the mutons. :| Two of my guys managed to get back to the Skyranger for an evac.As I've said before, my theory is that it's just a patrol. However, when the computer thinks you can't see its units, it teleports them instantly to its destination to make the turn go faster. If you played the original you know how long the HIDDEN MOVEMENT could last otherwise. Sometimes this doesn't work quite right and a patrol seems to 'teleport' into the middle of your squad.