Airplanes can and do occasionally strike each other.
The results are usually tragic, and needn't always be. This can be done safely enough, but single-engined aircraft which experience power loss are in the same jam as those losing their engine over hostile terrain. The result is a sudden loss of altitude that too often causes loss of life. The rocket deployed systems are so fast, they may offer a solution. Though rare on modern, well-designed aircraft, wings do break.