Final answer:
ATAAPS and MTT get their LOA information from the Defense Finance and Accounting Service (DFAS) system.
Step-by-step explanation:
ATAAPS and MTT both obtain their LOA (Leave and Earnings Statements) information from the Defense Finance and Accounting Service (DFAS) system, which is the central system responsible for processing payroll and accounting information for the Department of Defense (DoD).
The LOA information includes details about an employee's leave, earnings, deductions, and other relevant information. It is used for calculating and documenting an employee's compensation and benefits.
ATAAPS (Automated Time Attendance and Production System) is an online system that allows employees to input and track their time and attendance, while MTT (Manpower, Personnel, and Training Tracker) is a system used for personnel management and tracking within the DoD.