There is something to this rumor. I talked to our (NJA) mechanics in the DEN Signature crewroom 2 weeks ago. Maintance will be rotating mechanics thru there on 1 week intervals to support 680's based in PR and they are taking 680 tooling. They already bid for the schedules. I asked if that tooling would also work on the 680A. They said some would be not all. I asked if it was to support EJM. He said NJA MX can't work on EJM planes. The mechanics were confused by the entire thing.