An unprecedented Soviet inspection of three U.S. missile facilities went well, and the Soviet teams may choose to inspect more sites before departing, a Pentagon spokesman said Sunday.

"It's gone very well. We're extremely pleased with the process," said Cmdr. Kendell Pease, spokesman for the On-Site Inspection Agency. "They've stayed within the inspection regime."The agency, provided for under terms of the Intermediate-Range Nuclear Forces Treaty, signed in December by President Reagan and Soviet leader Mikhail Gorbachev, eliminates superpower ground-launched missiles with ranges between 300 and 3,400 miles.

Pease said Soviet teams fanned out Saturday to inspect U.S. installations at Fort Sill, Okla.; Longhorn Army Depot near Marshall, Texas; and Redstone Arsenal in Huntsville, Ala.