United Flight 93 crashed into a field near Shanksville, Pennsylvania

The start of the war is generally held to be at dawn on Friday, 1 September
1939, when German troops and tanks raided the Polish countryside,
destroying everything in their path. A little over an hour later, Nazi
dive-bombers were attacking the civilians of Poland’s capital city
of Warsaw. The bombing destroyed cities, railroads, and military
bases. Britain and France declared war on Germany two days
later.

 
A German air patrol fly’s over Poland

Polish oil and gas tanks are set aflame by the German
bombardment at Westerplatte

Nazi soldiers march on Poland

U-2 pilot Francis Gary Powers (center) during his Soviet tribunal

The Lockheed U-2

Wreckage of the downed spy plane

Amelia Earhart

(Reuters) – A team of researchers trying to solve the mystery of aviator
Amelia Earhart’s 1937 disappearance said on Friday that underwater
video from a Pacific island has revealed a field of man-made debris
that could be remnants of her plane.

The footage was collected in July by The International Group for Historic
Aircraft Recovery (TIGHAR) during a $2.2 million expedition to Nikumaroro
in the Republic of Kiribati.

Amelia Earhart‘s Lockheed Model 10 Electra 

Underwater video showing  a semicircle at top (the fender?) and a round object
off to right. (Click to enlarge)