Systems and methods of tracking and/or avoiding harm to certain devices or humans

A system that detects friendly fire comprising:

• a plurality of position sensors for attachment to military assets, each sensor comprising:
• a GPS receiver for determining the position of a military asset;
• a processing component that receives position data from the GPS receiver, the processing component including a subcomponent configured for communicating sensor data;
• and
• an electronic compass in communication with the processing component;
• and
• a communication interface configured to enable wireless communication between the sensor and a host;
• wherein the communication interface is further configured to:
• allow exchange of information with a host device to enable the host device to determine when users of individual sensors are firing weapons at each other;
• and
• receive a friendly fire incident warning when the sensor is associated with the friendly fire incident;
• and
• an acoustic information processing component that determines a location of a source of a weapon fire incident, upon firing of the weapon, for processing by the host device.

A method of determining whether to employ lethal measure within a certain boundary to avoid harm to assets, wherein the assets include certain devices and/or humans, the method comprising:

• associating a sensor with each asset, wherein said sensor includes a GPS receiver;
• determining by the GPS receiver a location of the asset;
• transmitting wirelessly the location of the asset so determined to a host device;
• determining a source location for weapon fire based on acoustic energy emitted by the weapon upon firing;
• and
• determining whether to employ the lethal measure in response to the location of the asset transmitted to the host device and the source location.