TY - BOOK AU - Martin,Gus TI - Understanding homeland security SN - 9781506346137 (pbk : alk. paper) AV - HV6432 .M377 2017 PY - 0000///USA, California CY - Sage PB - 2017. KW - United States KW - Department of Homeland Security KW - Terrorism KW - Textbooks KW - Civil defense KW - National security KW - Emergency management N1 - Includes bibliographical references (pages 410-420) and index ER -