Definition: In this task, you need to generate an appropriate title for the given summary of some paragraph. The generated title must be short and should include the main topic of the given text. Your summary should be less than 20 words long.
Input: Defence lawyers for five men accused of plotting the 11 September 2001 attacks have challenged the fairness of the military tribunal at Guantanamo Bay.

Lawyers say 9/11 hearing protected by 'veil of secrecy'