Fill in the blank (_) in the following sentence from the following choices.
Sentence: Brett bought the airplane tickets for Joel and their family after _ checked their schedule.

Choice 1: Brett bought the airplane tickets for Joel and their family after Brett checked their schedule.
Choice 2: Brett bought the airplane tickets for Joel and their family after Joel checked their schedule.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
2
2.