A joint venture between two US construction firms has accused international brokerage Aon of professional negligence in its placement of a wrap-up insurance policy for a Las Vegas stadium. Hunt Construction and Penta Building, the contractors of the T-Mobile Arena, have filed a complaint against Aon Risk Services South, which they asked to advise regarding the wrap-up insurance program for the project. The contractors alleged that Aon claimed to be "a leader in construction project wrap-ups” and that it was experienced and skilled in providing professional services related to the insurance program.