CR & ATSF On My HO Layout

CR 7894 (an Atlas GP38) and ATSF 4622 (an Atlas SD26) lead a mixed freight on my layout. 2 Kato Conrail 80MACs, a CSX Athearn SD50, an undec Atlas GP38, a CR Athearn SD50, a CSX Atlas MP15 and a Spectrum UP 2-8-0 stand by in the back ground. The sound is coming from the SD26.