Best thriller movie stupidity of 2012

Stupidity: We see that the control room had the teenagers' heartbeats and pulses monitored. When Marty was presumed killed, the control room thought so as well, but he did surprisingly reappear at the end. They didn't bother to check the monitor to see whether or not his vital signs had stopped.

Stupidity: I seriously doubt that any Mexican Mafia cartel operating here in the U.S. would waste their time eliminating two simple patrol officers. There's nothing to gain by doing so, and it would bring a war between themselves and the police, which in return would bring hundreds of arrests of key members, drug busts, raids of their operations within Southern Cali, etc. They wouldn't risk their business taking millions of loss of revenue all to kill two patrol beat cops.