What does USO stand for?

What does USO mean?

USO	United Service Organization Governmental » Military
USO	United Service Organizations Community » Non-Profit Organizations
USO	United Services Organization Community » Non-Profit Organizations
USO	Ultra Stable Oscillator Governmental » NASA
USO	United States One Miscellaneous » Unclassified
USO	Unidentified Submarine Object Governmental » Military
USO	Unconfirmed Stories Organization Governmental » US Government
USO	Unión Sindical Obrero International » Spanish
USO	Unidentified Superconducting Object Academic & Science » Electronics
USO	Unverified Southern Object Community
USO	Understanding the Situation of Others Community » Educational
USO	UnStarted Object Miscellaneous » Quilting