You hear through the grapevine that the last remaining U30Cs in North America are set to work ore service on the LS&I tomorrow. You marvel at how these 45-year-old monsters have survived into 2019. You’ve got a vacation day to spare, so you plan a trip to Michigan’s upper peninsula. You drive through the night to hit the north country before daybreak. You thank the heavens you’ve packed your Sigma F2.8 zoom trio - the 14-24mm Art lens, the 24-70mm Art lens, and the 70-200mm Sports lens - and you’re confident you can handle whatever the railroad throws your way.