Trying to sort out the order, production and delivery schedule based on the Ferrara site, and FDNY orders.
(1) There will be a total of twenty in the original three year contract, based on orders for six, four and ten.
(2) An add-on order for twenty one additional units has also been approved.
(3) That will bring the total order to 41 units.
According to the Ferrara website I see the following information:
(1) New deliveries pictures six (6) units as delivered. They are 4504, 4505, 4507, 4508. 4509, 4510
(2) "Missing in Action" Defined as not on the "In Production Page" and not yet on the "New Deliveries Page"
This is total of seven (7) units: 4506, 4511. 4512. 4513, 4514, 4515, 4516 .
(3) In Production:
(a) These seven (7) units would complete the original order of twenty (20): 4517, 4518, 4519, 4520, 4521, 4522, 4523.
(b) These three (3) units are also on this page: 4524, 4525, 4526. This would indicate that are working on the add on order of 21.
Hope I got this correct