Serious shortcomings in communications between agencies left major commanders in the dark and triggered a long lag in establishing a coordinated response to last year’s shooting at Los Angeles International Airport, according to a new report obtained by The Associated Press.

The report cites the “heroism” of officers who shot and took suspect Paul Ciancia into custody after he’d killed a Transportation Security Administration officer and injured three people on November 1, but it also details lapses in coordination and technology between police and fire departments, which set up separate command posts that didn’t unify for 45 minutes, The Huffington Post reports.