83960
Approximately thirty minutes into the flight , the hijackers forcibly breached the cockpit and overpowered the pilot and first officer , allowing lead hijacker and trained pilot Marwan al-Shehhi to take over the controls .
 Marwan al-Shehhi
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Marwan al-Shehhi