the time jesus was shot and injured and the time the gunman began his murderous rampage. he was injured prior to the mass volley of shooting. reporter: the sheriff wouldn t say how he thought that may have effected the shooter but former u.s. marshal and cnn law enforcement analyst says the guards presence may have sped up the shooter s plan. i still think the security guard going up there basically interrupted the shooter from whatever he was doing at that point in time and caused him to move his time schedule ahead. reporter: authorities say the guard went up to the 32ened floor after being alerted about an alarm due to an open door. compost heard the sounds of drilling when he got there. he was spotted by the shooter who had rigged cameras to show the hallway and the shooter released a barrage of bullets wounding him in the leg. compost immediately notified the