Location & Scenario

At the Creston Street Substation (in South Seattle near Bangor St.), we'll hide the puzzle next to the five foot purple electrical outlet.

Puzzle

See above.

Elapsed Time

Arrive at 3
Find the clue at 3:05
Leave at 3:35

Hints

There's a formula you're missing.
Think Einstein.
Compute e=mc^2 on a calculator and turn upside down.

Answer - OOZE

Teams need to solve e=mc^2.
M = 8 (4 Grandparents, 2 Maternal Cousins, 2 Paternal Cousins).
C = 20 (2 Maternal Uncles, 2 Maternal Aunts, 6 Maternal Cousins, 2 Paternal Uncles, 2 Paternal Aunts, 6 Paternal Cousins).
e = 3200.
3200 upside down spells "OOZE".