Disk Transfer Area 
Differential Thermal Analysis 
Department of Transitional Assistance 
Don't Trust Anybody 
DEUTZ-ALLIS 
Dual Trunk Adapter 
Data Trunk Adapter 
Defense Travel Administrator 
Development Test Article 
Differential Thermal Arrest 
Direct Toxicity Assessment 
Damage Tolerance Analysis 
Damage Tolerance Assessment 
Dance Teachers' Association 
Dartmoor Tourist Association 
Data Terminal Adapter 
Data tracking and accountability 
Data Transfer Adapter 
Dave's Targa Animator 
Debris Transport Analysis 
Decision Tree Analysis 
Dedicated Test Article 
deep transverse arrest 
Deferred Time Analysis 
Delivering the Action 
Democratic Turnhalle Alliance 
dental therapy assistant 
Department Time Administrator 
Deputy Technical Advisor 
descending thoracic aorta