Although BNSF has nearly 800 SD70MACs on the roster, it seems that large swaths of them are in storage these days. It actually feels a little rare to catch one out on the mainline. If you look closely, you might also notice that BNSF 9725 is now designated as an SD70MACe. BNSF partnered with Progress Rail to update 24 SD70MACs. The upgrades included replacing the original Siemens electronics with modern Mitsubishi electronics, installing new traction motors, and upgrading the cab to an isolated cab for crew comfort. The units also received the New Image paint scheme, if they were not already sporting it. Most SD70MACs still wear the Heritage 2 scheme.
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