If the crisis revolves around to a regional partner, combat commanders employ joint forces to deter aggression and signal u. s. commitment.

I believe the answer is: External threats

External threats refers to various threats which source come from outside united states' regions.

This type of threats usually occurs when different countries are involved in a certain type of conflict due to the failure in foreign policies.   When such threats arise, the joint forces typicall consist of several agencies and resources which taken nationwide.

the correct answer on edgen is:

(c.) prevent the spread of communism.

i just took the test.

no, dan should reduce his discretionary spending. not long-term goals involve more planning than short-term goals do