A billionaire wants to use a cargo plane to fly an orca to freedom after 53 years in captivity. Here's how it could work.

• A $20 million plan to release a killer whale named Tokitae from captivity is firming up.
• The orca has been kept in a small enclosure in the Miami Seaquarium since her capture 53 years ago.
• The billionaire-backed plan would see the killer whale loaded on a plane and flown across the US.

A billionaire philanthropist is backing a $20 million plan to release Tokitae the orca from her small enclosure in the Miami Seaquarium.