Chasing Iowa Interstate CBBI From Silvis to Bureau Junction

On Saturday, June 19, 2021. myself and two friends went to the Quad Cities to railfan. In the afternoon and evening, we caught Iowa Interstate's CBBI (Council Bluffs to Blue Island) heading eastbound from the yard in Silvis. A trio of locomotives, ES44AC 503 as well as GP38-2s 708 and 716, hauled a cut of ethanol cars to Bureau Junction, where it then picked up a string of rock hoppers before continuing east.
I caught it the train in five locations: Colona, Geneseo, Sheffield, Annawan, and Bureau Junction.