"We saw a fire, we ran in, we helped people. I didn't think it was anything that huge." It was quite the understatement from a Texas man and his Hoschton brother-in-law, whom Gwinnett authorities credit with saving the lives of a mother and her two children Wednesday morning. Sean Martin, 35, of Lake Conroe, Texas, and Jonathan Buckner, 44, were driving on Rock Springs Road in Buford when they noticed flames coming from the side of a house. They called 911 and, because they noticed cars in the driveway, knocked on the front door. When they got no answer, Buckner shouldered it open and plunged into the smoke-filled room.