Multiple Choice, Multiple Answers

Read the passage and select ALL correct options. Wrong selections lose points.

Volunteers at the Cairnvale Rescue Unit train year-round in rope work for callouts above the treeline, where the window between a distress call and worsening weather is often narrow. In winter, drone units now scan for thermal signatures before a ground team is dispatched, frequently saving hours of daylight that would otherwise be lost to a blind search. Drones, however, are grounded whenever winds exceed fifty kilometres per hour, forcing teams back onto traditional grid searches. The unit's director notes that thermal scans struggle to distinguish an injured hiker from sun-warmed rock, so a positive reading still requires human confirmation. Since the drones were introduced, average callout duration has fallen, though the unit still relies entirely on volunteer labour, as no government funding has been secured for paid rescuers.