Flags are being flown at half-staff in various parts of the US, but the reason appears to differ by location, with some areas honoring a fallen air force pilot, a WWII soldier, or observing National Peace Officers Memorial Day, while others may be related to a funeral. The specific reason for the half-staff flags is not consistent across the country. It is unclear if there is a unified national reason for the half-staff flags or if each state or region has its own reason.