I would sure hate to be a lost suitcase today, you will get blown up for sure.
Other news at your link.
"Small fire erupts along Olympic Pipe Line in Renton"
(no cause - still leaking)
http://www.kirotv.com/news/3337373/detail.html
WHAT'S TO PREVENT THE FERRY ETC. OFFICIALS FROM SAYING 10 MIN BEFORE DISEMBARKATION:
PLEASE SCAN THE AREA AROUND YOU. IF YOU SEE AN UNATTENDED PACKAGE OR SUITCASE OR BOX, BACK PACK ETC. NOTIFY A STAFF MEMBER IMMEDIATELY. WE WILL NOT ALLOW ANY DISEMBARCATION UNTIL ALL AREAS HAVE BEEN CLEARED.
And then insure out of the way places are searched similarly by staff the last 15 min before arriving at the destination.
Why would that be so hard?