A helicopter alert system on a helicopter, the helicopter alert system comprising: a first camera; a second camera; and one or more processors configured to: determine a location of the helicopter based on data generated by one or more data sources, wherein the one or more data sources comprises at least one of a global position system and an inertial navigation system; acquire a first image with the first camera, acquire a second image with the second camera at the same time the first camera acquires the first image, determine a depth value of a first object based on a location of the first object in the first image relative to a location of the first object in the second image, determine a depth value of a second object based on a location of the second object in the first image relative to a location of the second object in the second image, compare the depth value of the first object to the depth value of the second object, based on the comparison, determine a difference between the depth value of the first object and the depth value of the second object; reference the location of the helicopter to a maps database to determine whether the first object or second object is not a collision threat; in response to the difference between the depth value of the first object and the depth value of the second object exceeding a depth variance threshold value, the depth value of the first object or the depth value of the second object exceeding the threshold depth value, and based on the determination of whether the first object or the second object is not a collision threat to the helicopter, generate an alert. a first camera; a second camera; and one or more processors configured to: determine a location of the helicopter based on data generated by one or more data sources, wherein the one or more data sources comprises at least one of a global position system and an inertial navigation system; acquire a first image with the first camera, acquire a second image with the second camera at the same time the first camera acquires the first image, determine a depth value of a first object based on a location of the first object in the first image relative to a location of the first object in the second image, determine a depth value of a second object based on a location of the second object in the first image relative to a location of the second object in the second image, compare the depth value of the first object to the depth value of the second object, based on the comparison, determine a difference between the depth value of the first object and the depth value of the second object; reference the location of the helicopter to a maps database to determine whether the first object or second object is not a collision threat; in response to the difference between the depth value of the first object and the depth value of the second object exceeding a depth variance threshold value, the depth value of the first object or the depth value of the second object exceeding the threshold depth value, and based on the determination of whether the first object or the second object is not a collision threat to the helicopter, generate an alert. determine a location of the helicopter based on data generated by one or more data sources, wherein the one or more data sources comprises at least one of a global position system and an inertial navigation system; acquire a first image with the first camera, acquire a second image with the second camera at the same time the first camera acquires the first image, determine a depth value of a first object based on a location of the first object in the first image relative to a location of the first object in the second image, determine a depth value of a second object based on a location of the second object in the first image relative to a location of the second object in the second image, compare the depth value of the first object to the depth value of the second object, based on the comparison, determine a difference between the depth value of the first object and the depth value of the second object; reference the location of the helicopter to a maps database to determine whether the first object or second object is not a collision threat; in response to the difference between the depth value of the first object and the depth value of the second object exceeding a depth variance threshold value, the depth value of the first object or the depth value of the second object exceeding the threshold depth value, and based on the determination of whether the first object or the second object is not a collision threat to the helicopter, generate an alert.