On the 03:15 eastbound out of Alliance last night, PTC pushed a late TSR update while the HTD dropped the EOT link on a 7,200‑ft train, and our lineup went fuzzy right before a meet. What’s your go-to tool or workaround — external battery on the tablet, standalone air gauge, or a quick manual roll-by — to keep time without stacking delays at the siding? I’m after setups that reliably save 5–10 minutes when the tech hiccups.