It doesn't make sense unless your theory is that Evil President Obama is intentionally dismantling any programs we may have had in order to make terrorist domination of the world easy, twirling his mustache all the way. . . .
You seem to be speculating that Obama is doing things to actively undermine any defenses we have based on... I'm not sure what exactly. This seems to be part of the "bizarro world" theory that people have about political opponents. They think, "I'm against policy X and they're for policy X" means that the other guy is their exact mirror image and end up with, "I'm for fighting terrorism, so he must be for enabling it." No actual evidence of policy disagreement or bad policy is necessary. It's just reasonable to assume that the other guy is making a hash of it because he's your opposite and you'd be doing everything right.
Apparently you believe that all well intentioned actions regardless of how different they are have the same result in the end. Cut 100,000 troops to the Army and slash its budget by $50 billion is the same as adding 100,000 troops to the Army and adding $50 billion to its budget. Refusing to capture and interrogate terrorists provides just as much information as capturing and interrogating them. Is there any chance that you can spot the nonsense there? Can you make an allowance for well intentioned but flawed, counterproductive actions resulting from decision making based on ideology divorced from the facts? Is that a possibility? Or does it all devolve to "mustache twirling"? That is just so tedious. Do you pay any attention to the news?
Pentagon Set to Slash Military to Pre-World War II Levels
...so it would be kind of surprising if the DOD ignored the whole thing for all those years and should start scrambling now that some guys playing solider in homebrew camps are thinking about it.
DOD is great for the 1% of Americans involved with the military. Unfortunately that doesn't do much for the other 99%.
My understanding is that it's a "treat with antibiotics after exposure" type of thing. And we have and produce lots of antibiotics, many of which I remember us ramping up production on post 9/11.
There are vaccines for plague, but other than the military or some travelers not many people get them. Even with treatment the plague still kill around 10% of its victims. When untreated it kill a far higher percentage. About 100 years ago it kill about 2/3 of its victims in the US.
I suspect not, given that they appear to be trying to get it from dead animals at the moment.
There are plenty of groups associated with al Qaida and ISIS. The fact that one is doing that says nothing about what another has been able to do.