Lock-ins? Equipment yes. Base/division no.
Guys gave switched bases while still in training. That won't happen anymore because the bid award to effective date has increased by a month. So guys should be done with training before their first opportunity to switch bases becomes available.

Eg - October new hires can bid in the job vacancy run closing 11/8. That's effective Feb 2017. Even the October guy who finishes last will be done in late Dec or early Jan.