Advanced Planner and Optimizer Army Post Office Alpha Phi Omega Apache Point Observatory Apogee Accessory Power Outlets Air Post Office Army Procurement Objective Acute pulmonary oedema Adaptive Performance Optimization Apolipoprotein Apollo Program Office apomorphine apoprotein average passenger occupancy abductor pollicis obliquus Absolute Positioned Object Academic Personnel Office Access Protection Option Accessory Products Operation Accountable Property Officer acquired pendular oscillation Acquisition Program Office Acting Pilot Officer Administrative Penalty Order Administrative Policy Office adriamycin, prednisone, oncovin Advance Planning and Optimization Advanced Planning and Optimization Advanced Production Orders
Advanced Planner and Optimizer
Army Post Office