World War II Bomber Formation Painting

The item is a painting depicting a war scene with several aircraft, specifically what appears to be a formation of B-17 Flying Fortresses. The primary aircraft in the foreground is a large, brown bomber with visible engines and propellers, rendered in a somewhat stylized or illustrative manner. The background is a sky with a light blue hue transitioning to a darker blue section at the top. White contrails streak across the sky, indicating the movement of the aircraft. Several smaller, less detailed aircraft are visible in formation behind the main bomber, and tiny black dots scattered in the sky may represent enemy fire or debris. The painting appears to be rendered on a textile material, possibly canvas or a similar fabric, as indicated by the texture and the presence of grommets or eyelets in the lower right corner and possibly the lower left corners, suggesting it might be intended for hanging or display. The edges of the painting are visible and appear to be unfinished or simply hemmed. There is a signature in the lower right corner, though it is difficult to decipher clearly, it might read 'Wm. Heng. Jr.' or similar. The overall color palette consists of browns, blues, and white. The condition appears to be relatively good with some minor edge wear visible. The style of the aircraft and the subject matter suggests a likely mid-20th century origin, possibly related to World War II period art or illustration. The craftsmanship appears to be that of a skilled amateur or professional illustrator rather than a fine art painter, given the detailed rendering of the aircraft and the dynamic composition.