F1 (left), J2 (left of center), and LR87 (right) rocket engines at the Thomas P. Stafford Air and Space Museum, Weatherford, Oklahoma, USA
<a href="//commons.wikimedia.org/wiki/User:OKJaguar" title="User:OKJaguar">OKJaguar</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>