Here's a breakdown of the key differences between the two images:

*   **Number of Aircraft:** The first image shows two planes, while the second shows two as well.
*   **Aircraft Type & Design:** The first image depicts older F/A-18 Hornet jets, whereas the second features newer F/A-18 Super Hornets with distinct wing designs. 
*   **Markings and Details:** The second image has more detailed markings, including squadron logos and numbers clearly displayed on the fuselage.
*   **Background Elements:** The first image includes a distant hillside, which is absent from the second image. Additionally, there’s a tower or structure visible in the background of the second image.