[forgotten man]

That looks like a Boeing 707.

[ZOOKER]

That looks like a Boeing 707.

It is, more or less. Same basic airframe as the KC-135 tanker. They put a radome on it and called it AWACS, there is a cargo-only version, other radar/surveillance planes as well as some I've forgotten, all based on the same Boeing design. The civilian 707 was very similar but not quite the same fuselage.

[Don W]

Good eye, that’s what the E6-B is based on.