As you'll recall, the original LaVena Johnson petition to the Armed Services Committees of the House and the Senate - asking those bodies to compel the Army to reopen the investigation of LaVena's death in Iraq - closed on May 23. I'm currently arranging with an organization for delivery of the petition to the legislators on those committees.
For the many people who have recently heard of LaVena's story and are looking for ways to help, activist Danielle Vyas has launched a new and separate petition effort on the Care2 network (also noted by Bruce Combs in comments). The Justice for LaVena Johnson petition is addressed to both houses of Congress and President Bush. Danielle's goal is one thousand signatures; after a full day, the count currently stands at 108.
I am very grateful to Danielle for sponsoring this new petition. I'll add my own name to the list today. This effort belongs to no single person; the more voices that can be raised in support of the Johnson family, the better.