…who showed up on Letterman, did the job, and then exited stage right.

It is of no minor note that Paul Schaeffer and the band played McCain in and out with “Soldier Boy.” When the American voter enters the booth in November, he or she will do a gut-check that will bring to fore the most basic of needs, that of personal and collective safety.

What John McCain’s drop-in on Letterman’s show proves is while the Democrats are yelling at super-delegates in back rooms, the sole GOP contender is doing something that constituents sorely need now, getting people to lighten up.