9/11 hijackers abandoned plane on runway

Two of the pilot-hijackers from the September 11, 2001, attacks abandoned a small airplane on a taxiway of Miami International Airport during their flight training.

But their actions didn't attract serious scrutiny from federal officials, a witness in the Zacarias Moussaoui trial said on Wednesday.

More info can be found here:
http://www.hindustantimes.com/StoryPage ... 8ec95da2c5

Did I miss something in the article....I don't see what they mean by "abandoning" the plane. They were just taxiiing, came to a stop and walked out and away? Makes no sense.