1393955173000-AP-Utility-SabotagePower industry executives are meeting here this week as federal lawmakers are raising questions about physical security at power plants across the country. Referring to last year’s sniper attack on a key substation in California’s Silicon Valley, four senators said the incident at the Metcalf transmission station represented “a wake-up call to the risk of physical attacks on the (electric power) grid.” “This incident came uncomfortably close to causing a shutdown of a critical substation, which could have resulted in a massive blackout in California and elsewhere in the West,” Majority Leader Harry Reid, D-Nev., and three Democratic colleagues wrote in a Feb. 7 letter to the Federal Energy Regulatory Commission and the North American Electric Reliability Corp. (NERC), which develops standards for the nation’s bulk power industry. MORE