The private military firm Blackwater is facing new scrutiny over its effort to build a training facility in Southern California. San Diego Mayor Jerry Sanders has demanded a probe into whether Blackwater misrepresented itself when it sought permits for the facility’s construction. Blackwater didn’t file under its own name, instead using the names of two subsidiaries. Earlier this year, local residents successfully blocked Blackwater from opening an 824-acre military complex known as Blackwater West in the rural hamlet of Potrero, California. The grassroots group known as the Courage Campaign says it’s collected 2,500 signatures to oppose Blackwater’s latest plans.