While all upgrades are worth mentioning, this particular move to a Grade 5 is particularly noteworthy. With this move it most clearly demonstrates the commitment these folks have to The Game. Now in full disclosure I have the pleasure of knowing these guys and can attest personally that is true. They are both excellent referees who put a lot into their craft.
Also noteworthy is that Grade 5 is a place where a referee has to make a real decision. National or not? Some may say this decision should have been made earlier, even before going to a Grade 5. I am mixed on the topic as I believe there is a place for "State Nationals" as it were ... the best a state has to offer within its own boarders. There is a place for these referees. These folks are the best within the state that want stay within the state, so to speak.
For others the decision is a mere formality as they already know they want to go on to do games that only a National Badge will let them do.
In all cases it is an event to be celebrated, as with it, these referees enter the top 1% of referees in US Soccer.