A quick jogs to memory.
The order for 40 locomotives was placed by Metrolink in 2013
First of them found their way to Metrolink in early 2016. Apparently they still remain to become reliable enough for broad deployment in everyday use and we are at the end of 2017. A few of them have seen regular service so far. It is not clear how many beyond the 13 that had been delivered by early 2017 have actually been delivered. It is also not clear how many are in regular service at present. Maybe our brethren in the Metrolink area can shed some light.
The engine that failed during this event was 907, which has allegedly been in regular service on the San Bernardino Line for several months.
As they say in our business, if you can't even fake a demo there is something seriously wrong. It is quite possible that Metrolink may have gotten themselves 40(or some number less than that) lemons.