Crash/disable 18wheelers in a way to block the main highways in and out of the city, preferably over any major bridges or roads that don't have frontage streets. Use a handful of snipers to discourage anyone trying to clear the obstruction.
Damage/destroy/disable the power substations distributing power to the city from the nearby power source. This can also be accomplished by using a sniper to shoot/sever the high voltage cables on the high current power lines leading to/from the power source and substations.
The effect is that the city now has vastly reduced flow of food/supplies into the city and any supplies that are in the city will spoil sooner due to lack of refrigeration. Water supply also might be affected, depending on location of source and how it's powered, but as a human can survive without food for months but only days without water, it's advisable to leave the water supply alone.
How to siege a city via 2 objectives:
Crash/disable 18wheelers in a way to block the main highways in and out of the city, preferably over any major bridges or roads that don't have frontage streets. Use a handful of snipers to discourage anyone trying to clear the obstruction.
Damage/destroy/disable the power substations distributing power to the city from the nearby power source. This can also be accomplished by using a sniper to shoot/sever the high voltage cables on the high current power lines leading to/from the power source and substations.
The effect is that the city now has vastly reduced flow of food/supplies into the city and any supplies that are in the city will spoil sooner due to lack of refrigeration. Water supply also might be affected, depending on location of source and how it's powered, but as a human can survive without food for months but only days without water, it's advisable to leave the water supply alone.
Sorry, but war is war. Shut down the water too.
The people of Seattle will just get/loot it from the grocery stooooohhhhhh, right, they forced them all out.
Well, they say it rains 9 months of the year in Seattle...
Already done. The water mains won't be able to stay at pressure when the power's shut off.