Jo Santini
Background
Jo Santini is a helicopter equipment engineer. Her uncle is Dominic Santini who also raised her. She grew up with Stringfellow Hawke and St. John Hawke.
During the events of Airwolf: Season 4 Episode 1 Blackjack played by Michele Scarabelli
Jo is flying in a helicopter with Hawke showing him a wind drift auto compensator she built. They test out her machine and it works. After they land, Jo runs back to the helicopter and finds an envelope. Dominic gets into his helicopter and as Hawke goes to speak with him the helicopter blows up. Jo visits Dominic's grave and then goes to the VA hospital where Hawke is being treated at. She tells Holt that she demands to see Hawke. Jason Locke walks up and starts asking her about Airwolf, but she again demands to see Hawke and enters Hawke's room. Jo continues to visit Hawke in the hospital and Hawke asks Jo to take Airwolf and find St. John.
Locke asks Jo questions about Dominic and what he was doing beyond Santini Air and then leaves an envelope with St. John's ring as he walks away. As Locke and Mike Rivers are driving to Airwolf's lair, they see it in the air. They follow it and find out Jo was the person flying it. She tells them she knows where St. John is and they take Airwolf to rescue him. St. John tries to warn Airwolf away and escapes from his cell. Burke gets into a helicopter and attacks Airwolf. Rivers then shoots Burke's helicopter out of the sky. Later, Locke, Jo and Rivers go back to the lair and Airwolf lands. St. John gets out and Locke recruits him to continue Hawke and Dominic's work.