This morning on The World of Aviation, Al Malmberg Delves into the 1943 Liberator crash that killed Polish General Sirkorski, 16 seconds after take off from Gibraltar. Chris Wroblewski and Garth Barnard have written the book, "Sabotage" An in-depth investigation of the 1943 Liberator crash that killed Polish General Sikorski. Was this crash an accident, or more?