Ryan McQuaid is a former Navy SEAL who founded McQuaid Security, a private security firm. He was introduced in season five. He is currently Arthur Campbell's employer. He is portrayed by Nicholas Bishop.
Annie and Ryan first met during Shady Lane. He was the former employer of Altan Borz. During their first meeting, he immediately took a liking in Annie and handed her his business card. She thought that he was offering her a job in his company, McQuaid Security, but he was just asking her out to dinner. Later in that same episode, he met with Arthur Campbell and offered him a job, using the fact that he knew that Joan Campbell had been passed over for DCS job.
During False Skorpion, he offers Annie a job with his company. He later saved Annie from another episode and he is the second to know about Annie's heart condition.
In Embassy Row, he attended a party to buy Russian helicopters and met Annie again. He followed her and saved her from Ivan Kravec.
During Brink of the Clouds, he and Annie worked together again and traveled to Azerbaijan to locate a rogue former CIA agent Nathan Meuller. He helped Annie from another episode. At the end of the episode, he comforted Annie about what Meuller had said.
In Grounded, he helped Annie, even risking loosing $100K. He took her to his helicopter but they found Bennett is dead, hit by a car. At the end of the episode, he and Annie spent the night drinking and talking. By the morning, they kissed but was disturbed by the doorbell. Through the glass, Annie saw that the man Bennett accused of following him was an his acquaintance. She started doubting his innocence.
During Spit on a Stranger, Annie handed Joan her resignation letter and accepted a job with McQuaid Security. He introduced her to the entire staff of the McQuaid Security. With Auggie's help, Annie was able to take information regarding his former agents that are part of an organization named "Flint". Annie investigates a deserted factory and found out that it was where the Chicago bombing was planned. Calder and Joan ordered to have him arrested. That night he went to Annie, where she held him at a gun point, he made her choose; either shoot him right there and then or let him go. Annie chooses the latter.
In Sensitive Euro Man, Annie helped him clear his name and find proof that Caitlyn was the mole in his company. During the stay at his safe house, they shared a romantic night before sending a flare to Caitlyn. Caitlyn sent three men to have them killed. They found out that someone is trying to set him up for a bigger plan.