ReserveJets offered my brother fixed 18% returns on a USDT investment

My brother put roughly $100,000 into an aircraft investment promoted through ReserveJets, largely in USDT. He was promised a fixed 18% annual return, with higher rates offered for larger investments and referrals.

I became concerned because payments appeared to come through changing entities and the returns did not seem tied to real charter-business performance. I am documenting the names ReserveJets, Worldwide Jet Charter, Carlisle Air Group, and related entities for anyone researching the offer.