International human rights groups filed a federal lawsuit Thursday against Occidental Petroleum and one of its security contractors over a 1998 bombing that killed 17 civilians in a Colombian village...The lawsuit was filed in U.S. District Court...The lawsuit names Los Angeles-based Occidental and Rockledge, Fla.-based Airscan Inc., an aviation security firm, as defendants and accuses the companies of helping [the Colombian military] conduct the raid.