1943: The Battle of Midway/Items

1943: The Battle of Midway features a variety of pick-ups and weapon upgrades. Each weapon upgrade is temporary (20 seconds usage), but it can be extended by picking up either a different weapon or an icon of the same weapon type. Weapon usage time limit maxes out at 64 seconds. Some weapons can be upgraded for increased firepower.

Red Fighter items
To collect an item, you must first shoot down an entire set of red jet fighters. If you eliminate the entire group, it will leave behind an item. Sometimes that item is predetermined and fixed, and shooting it will have no effect. But most of the time, it is a variable item which you must shoot to change it's appearance. The order in which the items change is as follows:

→ →  →  →  →  →  →  → The sequence repeats two more times →