Evans and Stan tweeted out a tease earlier in the day, via the official Captain America twitter account.
Turns out their destination was Phoenix. Here are a couple videos from their appearance.
Marvel's Captain America: Civil War finds Steve Rogers leading the newly formed team of Avengers in their continued efforts to safeguard humanity. But after another incident involving the Avengers results in collateral damage, political pressure mounts to install a system of accountability, headed by a governing body to oversee and direct the team. The new status quo fractures the Avengers, resulting in two camps—one led by Steve Rogers and his desire for the Avengers to remain free to defend humanity without government interference, and the other following Tony Stark's surprising decision to support government oversight and accountability.
Check out when Captain America; Civil War and other movies are coming out in ComicBook.com's Movie Release Schedule.