Sam Fisher- Sonar on Train

  The next connection between cars required them to descend and ascend the ladders since the gusts—coming in erratic salvos like gunfire—made it far too risky to jump. Fisher took another sonar reading as they came within two containers of the HEP car. He glimpsed right through the oil-filled container to detect the shimmering white outlines of a pair of agents huddling against the wind between cars, ready to ambush them. There was another one inside the locomotive serving as engineer, and two more inside the HEP car.

- Blacklist Aftermath, Chapter 35