Fill in the blank (_) in the following sentence from the following choices.
Sentence: International flights were handled by the helicopters rather than the jets, as the _ had less access to foreign airspace.

Choice 1: International flights were handled by the helicopters rather than the jets, as the helicopters had less access to foreign airspace.
Choice 2: International flights were handled by the helicopters rather than the jets, as the jets had less access to foreign airspace.
Which of the choices is correct? Respond with only "1" or "2" and no additional text.
2
1.