Grounding extended.
http://navylive.dodlive.mil/2017/04/...training-wing/
".......As I have shared before in messages to the force, I am fully prepared to limit or curtail flight operations if our fleet leadership team determines the risk to our aircrew cannot be mitigated to an acceptable level. After frank discussions with the aircrew, leadership staffs and engineers, I will extend the operational pause for at least a week to allow time for our engineers to do a deeper dive into T-45 systems and for leadership to determine additional mitigation measures that will reduce the risks associated with the T-45 oxygen breathing system."..........