Transportation systems sector-specific plan. 

 - 1 online resource (ii, 35 pages) :  illustrations. 
<br/><br/> GPO Cataloging Record Distribution Program (CRDP). 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Transportation--Security measures--United States.<br/>National security--Planning.--United States
<br/><br/><label>GPO Item No.: </label>0520-B (online) 
<br/><br/><label>Gov. Doc. Class. No.: </label>HS 1.2:T 68/2