mr. stow. mccourt and the dodgers declined to comment on the lawsuit. but did tell abc news, new security measures were implemented since the attack. for "good morning america," paula faris, abc news, new york. >> paula, thank you for that. >>> and now, to terrifying moments at one of the world's tallest buildings, when a family visiting chicago's willis tower felt the glass cracking beneath their feet on the 103rd floor. abc's alex perez has the frightening details. >> reporter: at 103 stories high, this is the sight no one would ever want to see. the glass floor beneath you cracking. >> i was screaming crazy. >> reporter: but for this man and his cousins, it was a terrifying reality during a visit to the famous willis tower wednesday night. >> your heart pounding. >> reporter: he and his cousins were on the glass observatory ledge, 1300 feet above the street, when panic set in. >> i could feel a million pieces on my hand. and i looked down and i could see it was cracking very fast. i jumped off. rolled off. crawled off. i don't know what i did. >> ste