"Air does not need rescuing. But plummeting paratroopers do. Don't get confused."
Air rescues are tier 9 in the Placebo industry. Their requirement is impossibly high, which is a giveaway that these requirements will be lowered in the future much like other industries. Also, the researcher who automates this industry, Zap McNicoy, unlocks at Rank 120. Despite Rank 119 being available, the price and unlock requirement of this industry has not been lowered yet because HH did not include a pre-auto air rescue mission for that rank.