Weeks after reports surfaced about Libyan rebels using a Canadian-made drone in operations against forces loyal to former ruler Moammar Gadhafi, a U.S. company has begun touting a similar ultra-small, rotary-wing aircraft. After working on the system with the Defense Advanced Research Projects Agency over the last four years, California-based AeroVironment is looking for buyers of its Shrike drone. The five-pound aircraft offers a "hover, perch and stare capability," according to Steve Gitlin, vice president of marketing strategy. Its hover...