If needed, we have an email that goes out for RSA (Reserve System Augmentation). Anyone qualified in the seat may reply to the email from any base. You're paid 4.12 hours at 1.5 your rate if not called. If called its a minimum of 5 hours or block, whichever is greater. You are responsible for getting to the airport within 2 hours of getting a call.

They typically pop up during IROPs or holidays. One just went out for E190 FO in JFK a few hours ago, actually. So any E190 FO at the company can ask for it. They just have to be in JFK for the call out period.