[ARCHIVAL VIDEO] Cameraman caught in aftermath of Twin Towers collapse on 9/11 ( www.youtube.com )
Ever since the linked clip was posted, when this time of year comes round I think about the people in that video and the sound of all of those PASS devices going off.
Current BBC news coverage: September 11: America remembers lives lost in al-Qaeda attacks
PASS Devices: Wikipedia
Dr Mark Heath: CNN Transcript
I accept that this might not be the right community to share this.
![](https://kbin.pithyphrase.net/media/cache/resolve/entry_thumb/45/ef/45ef251c79d587d088d4b9c7e566cc52da87119d0830a9b3b74f9b580e611820.jpg)