1. The balcony on what part of the Statue of Liberty has been closed to the public since 1916?

2. What metal's periodic symbol is Sn, derived from its old Latin name, 'stannum'?

3. Aircraft are affected by weight, thrust, drag, and what fourth force that pushes them upward into the air?

4. What perpetually worried pink monster Muppet made his 'Sesame Street' debut in 1979?

5. Due to a contract dispute, Bruce Jenner once briefly replaced Erik "Ponch" Estrada on what cop show?

What’s the "Kennection" between all five answers?