By Darlene Superville/The Associated Press WASHINGTON (AP) — President Joe Biden will observe next month's 22nd anniversary of the worst terrorist attack on U.S. soil at an Alaska military base with service members and their families, the White House announced. It will be the first time that a president has not attended any of the observances that have been held annually in New York City, Pennsylvania and Virginia, just outside Washington, according to an Associated Press review of media coverage of these events. Biden will stop in Alaska for the 9/11 observance at Joint Base Elmendorf-Richardson in Anchorage on his…