It is my understanding high altitude separation of the airframe with BP I plagued by at least 2 conditions: 1) the reduced pressure at altitude results in a failure that would otherwise be successful in ground testing. 2) More BP goes unburned, in part because the lesser pressure at altitude (#1) results less containment of the BP. Consistently mitigating for #1 should be relatively easy, but #2 not so much. Seems to me both these conditions could be mitigated for safety by having at backup “drogue” event occur at a lower altitude where the pressure is not that different from ground level testing. Has anyone tried this? Maybe using the “Main” ignition circuit on an altimeter to trigger the backup “Drogue” event or a programmable event on a more advanced flight computer.