So after piano lessons (just about 20 minutes ago), I asked Brienna where Benjamin was (after all--it was her day to babysit the 2 youngest). I knew the 2 boys were outside in the snow working/playing.
Brienna was at the computer. And Emmalee was in the living room.
So Brienna said: "I bet he is in my room" (he loves to climb the bunk beds).
Checked there & no Benjamin.
So I tried my (closed) door, found it was locked, unlocked it & found:
A sleeping Benjamin. This is a first!!! Glad he didn't wander away(door knob covers on outside doors) or get into anything dangerous!