Arriving between 12:00pm and 12:10pm, the Border Patrol and ICE agents did not breach the classrooms until nearly 1:00pm–almost an hour after arrival.
Although the federal tactical team eliminated the gunman, it is possible that they would have been able to neutralize the situation sooner had they not been told to hold back by local law enforcement.
The local police have stated that their primary objective was rescuing the other students and teachers, however medical experts have stated that their delay may have cost the lives of more wounded children.