Aurora-based Columbia Helicopters has sent a team to investigate a crash in Peru that killed seven employees who were on board. Michael Fahey, company President says it’s a very sad day for them, because although they are a global company, they are family. Five of the victims were from the U.S. and two were from Peru. The twin rotor helicopter was working on oil exploration operations. It had just taken off when witnesses say smoke came from the helicopter and it crashed.