This is one of the resources I used (I really should list out the links and post them).http://www.acwr.com/economic-development/rail-maps
The rail lines from Prince Rupert go east, then south through Vancouver. With Vancouver overrun, that route is closed. That means any resupply from Prince Rupert port to the southern united states on Canadian National would require shipping all the way east to Toronto and then south through Chicago (a journey of 5,000 miles each way, even if the Chicago route is open). If you combine Canadian National and Canadian Pacific, you can construct a route that cuts through North Dakota, Minnesota, and Wisconsin, then south. That's maybe 4,000 miles each way (assuming no severe weather, and no track failures). In addition, Port Rupert has a container capacity of 1.35 million TEUs, vs. LA Port's capacity of 8.8 million TEUs (and much better connected rail lines). With Portland, Seattle, San Fran, and Vancouver down, LA is now the vast majority of the Pacific shipping lane. Moreover, once the Gulf of Mexico is cut off, back-up capacity through the Panama Canal not only takes longer, but becomes perilously dangerous (as others have noted).
Prince Rupert Port is certainly critically important, but I do think MadSci is correct...
"Keeping LA open is the same as keeping the US open."
If LA goes down, Kaah will cripple whatever is left of the US production capacity. So while there are a bunch of storm knights tromping around what is left of Washington D.C., the Delphi Council would do well to pay attention to this critical vulnerability. I can imagine the arguments among the joint Chiefs of Staff:
Some Old Four Star General: "Mr. President, we need our assets in San Diego! Not traipsing around rescuing small bands of refugees in the jungle! I don't know who these Delphi Council jokers are, but this is WAR!"
As to the ends justifying the means, that's always a tough line to walk. Sometimes, in war, sacrifices are made. I just saw The Imitation Game again the other day. MI6 deliberately let thousands die to keep the Nazis from realizing they had cracked Enigma. And it worked...
So while the military is sending their "best" resources to protect hard points and key strategic locations, the Delphi Council is stuck with a bunch of misfits to send after "lower priority" goals like finding eternity shards and investigating rumors.
Delphi Handler: "Honestly, if I had anyone
else to send on this mission, I would send them. But you sorry lot are all we have... So suit up! What?? No, I don't mean put on your stupid costume... oh, whatever... Just get on the damn plane."