I haven't heard of the C-87 until now, it was a cargo-transporter variety of a B 24. I also hadn't heard of the base in at Natal, Brazil, that the US had for anti-sub patrols and as a strategic base for aircraft flying between South America and West Africa.

https://www.reddit.com/r/wwiipics/comments/oe3uv5/consolidated_c87_liberator_express_the_b24/