You must go down to the lower level and look for signs for "D1", and you will find a the symbol for First Aid.
The chair made available is not the best for pumping or nursing, but it's certainly an improvement from the restroom they've offered moms in the past!
There is a sink in the room
View from the door
There is a dedicated space for women who need to nurse and/or pump when visiting the Javits Center.