I want to know the answer to the following question:
What aircraft was hijacked?
All the background I'm provided with is that "On September 11, 2001, 53 Army civilians (47 employees and six contractors) and 22 soldiers were among the 125 victims killed in the Pentagon in a terrorist attack when American Airlines Flight 77 commandeered by five Al-Qaeda hijackers slammed into the western side of the building, as part of the September 11 attacks.". Is that enough to answer the question?
Answer: yes