There is a lot of discretionary money in 1450 to 1475. As long as it is for Global War on Terror(drugs, terrorists, ms13, ISIS) and it is for National Defense. Look at Trumps tweet about National Defense .
Line 1457 is $6b for National Defense Restoration Fund.
1472 says 2.5b can be moved from various places as long as congress notified. Not approval.
1455 has 1.8b to counter ISIL. If it can be shown ISIL or any country including IRAN are you using the border to get in it could be used. This would include Hezbollah or proxies.
There is also money in this section for National Guard to have non piloted aircraft, ie drones. Don't have the number off hand but if recall is a couple hundred million.
POTUS EO's have already set the table and probably a couple more to come, to use the funds exactly as intended—NATIONAL SECURITY.