Sources for imagery of plane crossing the Pentagon lawn:
https://web.archive.org/web/20161113141435/http://911encyclopedia.com/wiki/index.php/Pentagon
[Quoted from that page]
Video Footage
On December 15, 2004 Judicial Watch filed a Freedom of Information Act request seeking all records pertaining to camera recordings from the Sheraton National Hotel, the Nexcomm/Citgo gas station, Pentagon security cameras and the Virginia Department of Transportation.
On May 16, 2006 the following footage was released:
http://www.judicialwatch.org/archive/2006/flight77-1.mpg (5756 frames)
http://www.judicialwatch.org/archive/2006/flight77-2.mpg (6076 frames)
On December 26, 2009 Erik Larson filed a FOIA request for additional AA77/Pentagon information with the FBI. On March 16, 2010 the FBI released higher quality copies of the security camera videos previously obtained by Judicial Watch:
(Note the originals are in encoded with ADV1, a format used by old CCTV systems)
http://nate.flach.s3.amazonaws.com/11094237.avi rar source
http://nate.flach.s3.amazonaws.com/11094135.avi rar source
911 Case Study – Pentagon Flight 77: http://www.youtube.com/watch?v=YVDdjLQkUV8