on 9/11 where was the 4th plane headed

The query "on 9" appears too brief and ambiguous to identify a specific topic. The search results primarily show sports event box scores dated September 12, 2025, and also mention information related to the September 11 attacks, but do not clearly address or explain "on 9." Could this be a partial phrase or part of a more specific question? If referring to something happening "on 9," such as events or meaning related to the number 9 or a date the 9th, please clarify so a precise answer can be provided. For now, based on available results, no direct information explains "on 9" as a standalone term. Please specify the context or provide more detail.