An effort to prosecute the self-proclaimed mastermind of the Sept. 11 terrorist attack and four co-defendants veered off track again Thursday as a pretrial hearing ended with new obstacles that threaten to further derail the case before a military tribunal at Guantanamo Bay.

A group of Boston Marathon runners met up with city firefighters Friday at the September 11th Museum in a show of solidarity between victims of terrorist attacks. The gathering was held in the honor of two Boston firefighters who died in the line of duty last month. The runners who participated said they hoped the event would help Boston runners feel like part of a larger support group. More

Late in the summer of 2001, Peter Alderman, age 25, was vacationing with his family. For almost a year, he’d been working at Bloomberg LP, and recently the company had called him to New York. Casually he mentioned that he would soon have his first real assignment in the city, representing the company at a conference in downtown Manhattan the following week.