a gop staffer tries to film senate candidate liz warren. she is the democrat running for scott brown's seat in massachusetts. we'll play you the video and tell you what the warren camp is saying about this next. energy is being produced to power our lives. while energy development comes with some risk, north america's natural gas producers are committed to safely and responsibly providing generations of cleaner-burning energy for our country, drilling thousands of feet below fresh water sources within self-contained well systems. and, using state-of-the-art monitoring technologies, rigorous practices help ensure our operations are safe and clean for our communities and the environment. we're america's natural gas.