Good Read on P40F Roll<div class="ev_tpc_signature">

The Yo-Yo is very difficult to explain. It was first perfected by the well-known Chinese fighter pilot Yo-Yo Noritake. He also found it difficult to explain, being quite devoid of English.
??? Squadron Leader K. G. Holland, RAF.

It is generally inadvisable to eject directly over the area you just bombed.

??? USAF Manual