WHEATON, Md. — When James D. Martin was shot dead seven years ago in the parking lot of a grocery store in suburban Washington, it got little attention on the nightly news.

Early the next morning, a landscaper was fatally shot in nearby Rockville, also by a .223-caliber bullet. Then a cabbie, at a gas station not far away. There was another shooting a half-hour later just up the road — a woman slain as she sat reading on a sidewalk bench. Within 90 minutes, another woman was gunned down while vacuuming her van at a service station.

By 10 a.m., it was clear that something sinister was happening. Something awful.

Then it spread.

A shooting that night in Washington moved the sniper killings south. The next day, a woman was wounded in a craft store parking lot in Fredericksburg, Va., 50 miles from D.C.

Fear reigned. People stayed indoors, afraid to go shopping or pump gas. Authorities on television recommended ways to avoid becoming targets. Schoolchildren were kept inside at recess and drilled on duck-and-cover techniques.

Then came a lull — three days without a shooting. But on Oct. 7, 13-year-old Iran Brown was shot in the chest as he was dropped off at school in Bowie, Md., just east of Washington.

"Shooting a kid — it's getting to be really, really personal now," a tearful Montgomery County Police Chief Charles Moose told a news conference as the nation's collective concerns settled on its capital.

There were three more fatal sniper shootings in Virginia the next week, followed by another break — three days. Four. Five. Just long enough for people to relax, at least a little.

"We were thinking everything was going to be OK," said retired school teacher Bernice Easter, of Wheaton.

It wasn't. On Oct. 19, a man was shot outside a steakhouse in Ashland, Va., about 80 miles south of Washington. Three more days passed quietly. Then bus driver Conrad Johnson was killed in Aspen Hill, Md., not far from where the shootings began.

On Oct. 24, police captured John Allen Muhammad and teenage accomplice Lee Boyd Malvo at a rest stop 50 miles northwest of D.C. The nerve-tingling terror that had gripped the region's 5.4 million people and captivated the nation was over.

Now Virginia is preparing to lethally inject Muhammad at 9 p.m. Tuesday for murdering Dean Harold Meyers at a gas station in Manassas. The U.S. Supreme Court has not acted on Muhammad's last-ditch appeal. Muhammad's lawyers also have asked Gov. Timothy M. Kaine to commute his sentence to life in prison, saying Muhammad is mentally ill and should not be executed, but Kaine typically does not respond until the court has ruled.