not sure about the do nothing statement there. I'd say that doing nothing is reasonable advice only if you are in controlled airspace and you know why the RA is being generated. Fast jets work on a see and avoid principle, but you are right in saying that the speeds used and especially the very rapid rates of climb and descent available to FJ crews, are prone to setting off TCAS. We go to great lengths to minimize these alarms when operating around CAS, especially when we are climbing underneath airways. If you are outside of CAS though, and getting close to FJ operations, a high speed turn miles away from you may give enough of a vector to tickle the TCAS. That's why, where possible, we use MDAs to keep ourselves segregated from non military aircraft.