MBTA Commuter Rail Extra Movements

Hello folks, I thought it would be interesting to start a thread about the extra movements and when people spot them moving. I did manage to see one last Friday, but I missed the chance of getting it on video because I had no idea it was coming. Should I had a scanner with me, prob would have helped. It had 1074 Sanwhiched in the middle with some hsps and 1136 trailing. Not sure which mbb was leading as I thought it was 1530 maybe since that kind of horn was blown when I was at the Kingston line crossing.

There have been a couple of "double draft" movements noted over the Lowell Line last week, presumably they ran over the Stony Brook to reach the end of the Fitchburg line that is currently isolated.