Zero, that is one big reason to stand up for the RYR contract, make it WORTH something. BRK agreements will not remain at the same level while RYR contracts take a hit. Just look at the new BRK agreements at the same time RYR agreements were made, a 7% pay decrease plus 10% cut in command during your first years. Remember you will need to sign this new agreements to move onto command, move base or maybe just for the hell of it if BRK decides they want to swap you over.
If you let one slip, the other will slip too.