The NFL sent a memo Tuesday to all teams that, effective this Thursday, the league observer, present at every game in the press box, will now be responsible to communicate directly with both sidelines to alert the medical staffs of possible undetected injuries. The memo does not specifically mention concussions, but league and NFLPA officials concede that head traumas are the priority for the new policy that will be in effect at every game for the remainder of the 2011 season. "A direct ring-down phone line must be in place from the NFL Observer position in the press box to both the home and visiting bench areas," the memo reads. "This line should be clearly marked on the NFL Observer's phone. The purpose of the additional phone lines is to allow the NFL Observer to alert the Athletic Training staff to a possible injury that may have been missed at field-level." After receiving a call, a team's athletic training staff is expected to "verify that the player is being checked or that he will follow up on the situation."