This is from the USMS Nationals website:
National Qualifying Times
Competitors may enter a maximum of three (3) individual events without meeting the National Qualifying Times (NQTs) established for those events. Competitors may enter up to three additional events in which they have swum a time equal to or better than the NQT in the past two years. The NQTs for all events are listed here. Designate the events in which NQTs have been met with a "T" in the designated column. There are no NQTs for the 90 and over age groups.
This is from the USMS Nationals website:
National Qualifying Times
Competitors may enter a maximum of three (3) individual events without meeting the National Qualifying Times (NQTs) established for those events. Competitors may enter up to three additional events in which they have swum a time equal to or better than the NQT in the past two years. The NQTs for all events are listed here. Designate the events in which NQTs have been met with a "T" in the designated column. There are no NQTs for the 90 and over age groups.