Abstract: A portable ballistic shield is disclosed. The portable ballistic shield is contoured to conform to an individual's body and may be integrated with a rucksack and frame to provide protection to the user's back and torso while still allowing the user substantially unobstructed access to all parts of the rucksack. The portable ballistic shield may also provide rigidity for the rucksack, eliminating the need for a rucksack frame. The portable ballistic shield may also comprise a shape allowing for the user to concurrently utilize an assault rifle or other firearm. During times of hostility, the user may deploy the shield from the rucksack in a minimal amount of time in order to protect the user from oncoming gunfire or shrapnel.

Abstract: An attachable wing for an aircraft is disclosed. The attachable wing is configured to mount to the underside of the fuselage of an aircraft, such as a rotary wing aircraft (e.g., a helicopter) or a fixed wing aircraft. The attachable wing produces additional lift, which results in an increase in speed, and consequently, an increase in fuel efficiency and payload capacity. In some embodiments, the attachable wing is retractable to facilitate takeoffs and landings. Additionally, the apparatus may be made of a bulletproof or anti-ballistic material to protect the aircraft from incoming fire or crash damage. The airfoil apparatus provides additional lift, allowing for greater fuel efficiency and range of the aircraft on which it is installed.