On the third Saturday of every month, the Fleet invites adults and families who have children with autism to enjoy early access to the exhibit galleries in a quieter setting an hour before the Fleet opens to the public. Admission includes access to a special cool-off space and a special IMAX film screening at 10 am with the house lights on and a lower soundtrack volume. Regular admission rates apply. Visitors are welcome to stay and enjoy the museum all day. Early access to galleries, 9-10 am; special IMAX showing at 10 am. Balboa Park. More details here.