Sam smiled knowlingly when the “CW” appeared right under the “DW” but said nothing when Dean challenged him to comment with a look.

Just like he kept his silence when moments later their newly-human friend stumbled into the room, wearing Dean’s old Lep Zeppelin t-shirt.

After that, it just kept happening.

Some, like Claire and Jody, added their initials openly, joyfully, grinning brightly.

Others weren’t as open about it, but one day, Crowley dropped in and when he left, there was a “C” on the table they ignored.

And then there were those who couldn’t add their names anymore. Sam, Dean and Cas did those together, silently remembering those who had gone before.

None of them would ever know.

But many years later, no one was considered a true part of the hunter community if he didn’t add his initials to one of the many tables in the bunker - and stayed a minute to contemplate those it all began with.