Final answer:
If a SGT (Sergeant) needs financial assistance, they can sign for an AER (Army Emergency Relief) loan themselves.
Step-by-step explanation:
If a SGT (Sergeant) needs financial assistance, they can sign for an AER (Army Emergency Relief) loan themselves. AER is a nonprofit organization that provides financial assistance to soldiers and their families. Since the loan is intended to help the SGT, they are the one who signs for it.