San Antonio-based fire-protection company Bob Andrews Group says it’s zeroing in on Delaware County, Penn., as the site for its new regional headquarters and fire station. The new location stems from the recent launch of the company’s BAG-Emergency Response Services LLC subsidiary, which offers emergency responses for shippers moving crude oil by rail. The area around Delaware County is the terminus for multiple oil pipelines and rail lines and home to several refineries and a major train-to-marine…