MTA transit chief Andy Byford resigns after two years on the job

https://nypost.com/2020/01/23/mta-transit-chief-andy-byford-resigns-after-two-years-on-the-job/

Subway signals expert handpicked by Andy Byford also resigns from MTA

https://nypost.com/2020/01/24/subway-signals-expert-handpicked-by-andy-byford-also-resigns-from-mta/

https://en.wikipedia.org/wiki/Andy_Byford