Only one can be p22

In the front we have NS 5067 (GP38-2) in the background we have NS 7141 (GP60) which was serving on p22 local, then we have NS 2656 (SD70-2M) leading 192 to Columbia with NS 8710 (C40-8) trailing. NS 5067 was left on the dead end spur line in Warrenville more than likely by 191 yesterday and it wall take over the p22 local duties. NS 7141 stayed coupled to p22 all night but this morning 192 picked it up and brought it to Columbia, making NS 5067 the new p22.

What confused me the most is I'd never seen NS leave power on the dead end spur unless it was MOW cars. I thought something had to be wrong with this engine but I guess 191 had to have left it there yesterday.