IT IS a dangerous time to be alive in our world, for those under our bombs and for those resisting them.

Dressed in white mop-up suits, with "Citizens Weapons Inspection Team" printed on the back and "Disarmament Specialists" on the front, Dominican Sisters Ardeth Platte, Carol Gilbert and Jackie Hudson entered Minuteman III silo N-8 near Greeley, Colo., on Oct. 6, the anniversary of the bombing of Afghanistan.

They cut single links in the chains securing the gates in the outer and inner fences surrounding the silo. They left the gates open and peeled back a section of the fence, opening it to reveal the presence of a weapon of mass destruction.

They poured their blood, in the form of a cross, six times on the 110-ton silo lid and on the tracks that carry the lid to the firing position. Then, in a ritual of prayer and symbolic disarmament, they used household hammers on the silo and the tracks.

The nuns were arrested, jailed, charged and convicted of obstructing the national defense, which is listed under sabotage, and destruction of government property - felonies that carry up to 30 years in federal prison. They refused an offer of personal recognizance, knowing that they could not in conscience abide by conditions of their release (which forbid civil resistance) as this nation prepared to mount another war.

The nuns hoped to bring attention to the weapons of mass destruction covering more than 1,950 square miles of Colorado farmland (33,700 square miles in other states). The 49 nuclear-armed missiles in Colorado had recently been refitted with W-87 nuclear warheads, each with an explosive power of 300 kilotons (about 25 times the size of the Hiroshima bomb).

The trial, which began March 31 in a Denver federal court, was preceded by a hearing Feb. 21 at which defendants' motions for dismissal were denied. The sisters could not defend their actions using international law or the Nuremberg war crimes trials as a defense during their trial.

At their trial, the prosecution offered many witnesses from F. E. Warren Air Force Base in Wyoming. They testified that the nuns did nothing to interfere with national defense or the mission of the base and that neither the bloody crosses nor the pinging of their hammers damaged, contaminated or destroyed the cement or rails. Testimony on the value of property damaged could not meet the $1,000 required for felony destruction. Yet Judge Robert Blackburn denied defense motions for a directed verdict of acquittal.

Stripped of every other defense, the nuns testified that their intent was to uphold national and international law (which they couldn't discuss) and to call for the disarmament of weapons that inflict unspeakable, unconscionable and indiscriminate devastation and death. They were simple and eloquent in their orange jail suits.

They were convicted of two felonies: obstructing national defense and damaging government property.

From media interviews with jurors after the verdict, it was clear that jurors understood that the nuns had done something wrong and that they were required to bring back a guilty verdict. The jury had no sense of the seriousness of the charges. Federal sentencing guidelines require that the judge sentence them to between 72 and 97 months in prison.

As the United States seeks to find Iraq's alleged weapons of mass destruction, it becomes clear that exposing America's own weapons of mass destruction is difficult and costly.

The Minuteman III in silo N-8 is a weapon that is illegal under international law. Its use would kill combatants and noncombatants indiscriminately. It would poison the Earth for generations. The nuns believe disarmament is essential, and that even the threat to use nuclear weapons is illegal. They acted to try to stop an ongoing crime.

Sister Platte, who represented herself, said in her closing argument: "Sister Carol and I left Jonah House Community in Baltimore, where we feed hundreds, where we grow food to share with those in need. We carried tools that were not threatening, in obedience to the Biblical mandate: 'They shall beat their swords into plowshares, their spears into pruning hooks. Nations shall not pick up swords against nation, nor train for war anymore.' We are all brothers and sisters. When, we ask, are we going to practice this?"

The nuns are living a faith that teaches love of enemies. The nuns are calling us to our senses - reminding us that violence never works and that military spending, at the rate of $11,000 a second, results in far-reaching impoverishment.

The nuns return to court on July 25 for sentencing.

Susan Crane and Elizabeth McAlister are members of the Jonah House Community in West Baltimore, home to two of the three nuns convicted in Colorado.