SACRAMENTO, Calif. (AP) - Gov. Jerry Brown has vetoed a bill that would have set standards for when local governments can accept surplus military equipment like armored vehicles, heavy weapons and aircraft. The bill by Democratic Assemblywoman Nora Campos of San Jose was one of several bills lawmakers approved this year in response to concerns about police activities. It would have required local governments to hold a public hearing before acquiring the equipment. Brown said in a veto message Wednesday that transparency is important but it must be tempered by security concerns. He worries about jeopardizing safety by revealing equipment shortages of local law enforcement agencies in public meetings. The governor also says the measure is unnecessary because a May executive order by President Barack Obama requires local governments to approve equipment donations.