Everything Hasit Vibhakar knows about aerospace and defense he learned from his days at Melbourne-based Harris Corp., which makes gadgets from military radios to antennas. But in 2002, after heading up the sales division for the firm's 14-state southeast section for more than 10 years, Vibhakar took his Rolodex of business contacts and left for Palmetto. He started his own company, Telesis Technology.