A-9 oxygen mask with a "Juliet", early war.
A-10 standard oxygen mask, early war. This one is
affixed with a "Juliet" but it can also be worn on early flight helmets using the hooks.
A-10A oxygen mask, mid war.
A-14 oxygen mask with E-1 heater installed, mid war.
A T-30Q throat microphone, mid war.