ATP 2-33.4, page 134

Appendix B B-10 ATP 2-33.4 18 August 2014 Table B-8. Environment-related indicators Indicators of Suspicious Rural Activities Evidence of increased foot traffic in the area. Increased travel within and into remote or isolated areas. Unexplained trails and cold campsites. Establishment of new, unexplained agricultural areas or recently cleared fields. Unusual smoke, possibly indicating the presence of a campsite or a form of communication. Concentration of dead foliage in an area, possibly indicating use of camouflage. Presence of foot traps, spikes, booby traps, or improvised mines along routes and trails. Indicators of Suspicious Urban Activities Apartments, houses, or buildings being rented, but not lived in as homes. Slogans written on walls, bridges, and streets. Defacement of government and mission force information signs. Sabotage of electrical power network, pollution of urban area’s water supply. Terrorist acts against physical targets such as bridges, dams, airfields, or buildings. Change of residence of suspected agitators or opposition leaders. Discovery of message dead drops. Increased smuggling of currency, gold, gems, narcotics, medical supplies, and arms into urban centers. Appearance of abnormal amounts of counterfeit currency. Increase in bank robberies. Work stoppages or slowdowns in essential industries. Marked decline in product quality in essential industries. Marked increase in equipment failures in essential industries. Unexplained explosions in essential utilities and industries. Establishment of roadblocks or barricades around neighborhoods associated with opposition elements. Attempts to disrupt public transport through sabotage. Malicious damage to industrial products or factory machinery. Table B-9. Improvised explosive device indicators, observables, and signatures Indicators of Basic Improvised Explosive Device (IED) Indicators, Observables, and Signatures Vehicles following convoys for a long distance and then pulling off to the side of the road. Dead animals along the roadways. Freshly dug holes along the roadway (possible future IED report). New dirt or gravel piles. Obstacles in roadway used to channel the convoy. Personnel on overpasses. Signal with flares or city lights (turned off or on) as convoy approaches. Absence of the ordinary children in the area, merchants at a market. Key Indicators, Observables, and Signatures (Indicating Something is About to Happen) Dramatic changes in population from one block to the next. Dramatic changes in illumination (lights) from one area to the next during hour of limited visibility. Absence of children when normally present. Identification of markings indicated in intelligence reports of an IED site. New dirt or gravel piles.