On 26 August , Marwan signed into the Panther Motel in Deerfield Beach , Florida , paying US$ 500 , saying he wanted to stay until 2 September , and listing a Mailboxes Etc. as his permanent address . His register entry indicated that he was driving a blue Chevrolet Malibu , assumed to be the one rented by Atta two weeks prior , and manager Richard Surma said that he bent rules to allow Marwan to have another man as an overnight guest . On 28 August , Marwan went to the Miami International Airport , accompanied by an unknown man , where he purchased his ticket for Flight 175 . On 9 September , the motel manager , cleaning the room that al-Shehhi had vacated , found a bag containing a German/English dictionary , a protractor , flight manuals and local airport listings . Another employee later reported finding a box cutter . According to librarian Kathleen Hensmen , Wail al-Shehri and Waleed al-Shehri used Internet access at Delray Beach Public Library in August 2001 , where they may have been looking at information on crop dusting . They reportedly left the library with a third middle-eastern man , thought to be Marwan al-Shehhi , whom Hensmen claimed asked her for the name of a local restaurant . Staff at Shuckum 's Oyster Pub and Seafood Grill in Hollywood , Florida claimed they recognized both Atta and Marwan as two of the people who had been at the restaurant on either 7 or 8 September . While there are varying stories about Atta 's activities , all sources indicate that al-Shehhi drank rum and coke while talking to the others . On 9 September , they flew to Boston . The next day , al-Shehhi and three of the other hijackers , Fayez Banihammad , Mohand al-Shehri , and Satam al-Suqami , shared a room at the Milner Hotel in Boston . According to the 9/11 Commission Report , al-Shehhi made a 3-minute call to Mohamed Atta ( 6:52-6:55 a.m. ) on 11 September from within Logan International Airport as both American 11 and United 175 were to fly from Boston Logan to LAX . al-Shehhi boarded United 175 at 7:27 a.m. Around 30 minutes into the flight , between 8:42 and 8:46 a.m. , the plane was hijacked . During the flight , the plane narrowly avoided a mid-air collision with another aircraft , Delta Airlines Flight 2315 . Several calls were made from the plane to relatives , the passengers learning of the fate of American 11
Flight 175
United Airlines Flight 175
Marwan al-Shehhi