My son left a 2015 Guinness Book of World Records lying around. It's largely a mix of athletic feats, extravagant spending, freakish body conditions and diseases, and people who do dumb stuff in order to get into the book. It also features two sections focused on mass-murder. One celebrates the technology used to kill people. In that section, the United States is featured almost exclusively. The other section looks more at the wars, killing, and dying. In that section, the United States could not be avoided, but every effort was made.
Starting with the celebration of the tools of death, Guinness chooses to include these awards for the United States of America:
Most sea craft.
Most total firepower.
Most expensive super carrier.
Longest range stealth mini-sub.
Most expensive drone.
Most expensive military aircraft program.
Largest air force.
Most common fighter aircraft.
Longest "serving" bomber.
Largest anti-mine naval exercise.
Largest aerial assault using poisoned mice.
First successful combat submarine.