Wong choice of words guys when I said it's not longer available. Should have said it's not longer produced, and it's replacement is Halotron. Which it seems is better for the Ozone.
For inquiring minds:
https://www.epa.gov/ozone/snap/fire/qa.html
A. The Phaseout of Halons
When was the production of halons banned?
Under the Clean Air Act (CAA), the U.S. banned the production and import of virgin halons 1211, 1301, and 2402 beginning January 1, 1994 in compliance with the Montreal Protocol On Substances That Deplete The Ozone Layer. Recycled halon and inventories produced before January 1, 1994, are now the only sources of supply.
EPA's final rule published March 5, 1998 (63 FR 11084) (14 pp, 222KB), bans the formulation of any blend of two or more of these halons with one exception. An exemption is provided for halon blends formulated using recycled halon solely for the purpose of aviation fire protection, provided that blends produced under this exemption are recycled to meet the relevant purity standards for each individual halon. A fact sheet summarizing this rule is also available.
Must I now dismantle my halon fire protection system?
No. It is legal to continue to use your existing halon system. It is even legal to purchase recycled halon and halon produced before the phaseout to recharge your system.
However, due to the fact that halons deplete the ozone layer, users are encouraged to consider replacing their system and making their halon stock available for users with more critical needs.
Are there any federal laws on emissions of halons?
EPA's final rule published March 5, 1998 (63 FR 11084) prohibits the intentional release of Halon 1211, Halon 1301, and Halon 2402 during the testing, repairing, maintaining, servicing or disposal of halon-containing equipment or during the use of such equipment for technician training. The rule also requires appropriate training of technicians regarding emissions reduction and proper disposal of halon and halon-containing equipment. See the guidance document for more information (20 pp, 1.78 MB). The rule became effective April 6, 1998.