How will the US local area stations commerate the end of System-M?

How will the US local area stations commerate the end of System-M?

This footage is how the BBC commerated the end of System-A
-- http://youtube.com/watch?v=sG52HcgKaD4
-- I assume RTE (Ireland) had a similar commeration.

In each market, the NTSC transmitter shutdown will be historical, thus the

need for related programming.

One would expect that the programming, relating to the shutdown would be
in 
the public domain ... but I assume under some kind of GNU restrictions. I 
don't know if there will be equal joy with respect to the end of NTSC in 
Canada, or Bermuda or Mexico -- as the US more or less unilaterally
imposed 
System-M on these countries.