A lifeline emerges for the devastated airline industry

• The number of travelers passing through airport security checkpoints dropped by more than 80% between March 13, when the emergency was declared, and March 23, according to the Transportation Security Agency (TSA).

The big picture: The Treasury Department can demand stock warrants in exchange for the loans, which means U.S. taxpayers could wind up owning a chunk of America's best-known airlines.

• Air cargo carriers get a chunk of the money, too — $4 billion in grants and $4 billion in loans.
• Airports get $10 billion in grants and contractors like catering, ground crew and ticketing get $3 billion.

One of the most controversial recipients is Boeing, which, although not named, is believed to get up to $17 billion for loans and loan guarantees for "businesses critical to maintaining national security."

• Boeing CEO Dave Calhoun told Fox Business that his company would refuse government assistance if it came with equity strings attached.
• The company could tap other funds in the package and be subject to the same limits on stock buybacks and executive pay as other large employers, without giving up a stake in the company.

In total, the stimulus package includes $114 billion for transportation.

Go deeper: United CEO: Coronavirus impact for airlines "much worse" than 9/11 aftermath