UP 2725 is the former SP SD45R 8649, ex-MK 959, originally C&NW SD45 959.
SP 8584 is a SD40M-2 rebuilt by Morrison Knudsen from a SD45, originally SP 9074 then NRE 9074. One of not many SP units unpatched in Feb 2005.
GCFX 3079 was built as CP SD40 5510; rebuilt to SD40-2 status by Alstom Canada
PHL 43, a SD18, doing some switching. This was built as a Southern Railway high-nosed SD24 and was later owned by the CNW, hence the paint.
With a commemorative safety plaque on the side of the cab.
Ex SP 8619.
Ex DRGW 5384.