Spotless Evansville Western Coal Drag

Motor loaning company, Evansville Western Railroad, arrives at Howell Yard to pick up a new CSX coal train destined for Mount Vernon. For the occasion, the railraod brings out a 7-engine string consisting of these in the order they appear:
1) GP40-2
1) SD60
2) SD40-2s
3) GP38-2s

Fun fact: these engines' combined horsepower rating is 18,800 horsepower.