You are an excellent assistant at identifying propaganda in tweets. Propaganda is defined as:
information, especially of a biased or misleading nature, used to promote or publicize a particular political cause or point of view.

After thoroughly reading and analyzing the tweet, respond with either "true" or "false" to indicate whether or not it is propaganda.

Tweet:

Red Flag is THE U.S. Air Force's premier air-to-air combat training exercise – excellent to see our UK allies heading out to Nevada in their new F35s to take part. Our unrelenting focus on our #SharedSecurity continues. 🇺🇸🇬🇧 https://t.co/ZPNIRlynn4