"We want to remember the 40 that gave their lives as heroes to the country.” Source: Secretary of the Interior Sally Jewell at the official groundbreaking for the Flight 93 memorial in Shanksville, PA.
Also called an HP Supercell - High-Precipitation storm (or High-Precipitation supercell). A supercell thunderstorm in which heavy precipitation (often including hail) falls on the trailing side of the mesocyclone.
It's always a great time to revisit a site that celebrates the achievements of women in the industry. The Museum is dedicated to the preservation of the history of women in aviation and space and the documentation of their continuing contributions today and in the future.