Suicides across the active duty U.S. military decreased over the past 18 months, driven by sharp drops in the Air Force and Marine Corps last year and a similar decline among Army soldiers during the first six months of this year, according to a new Pentagon report. The numbers show a dramatic reversal of what has been a fairly steady increase in recent years. The shift follows increased attention by senior military leaders and an array of new programs aimed at addressing what has been a persistent problem in all the services. The numbers provide a glimmer of hope that some of the recent changes " which range from required counseling visits to stress relief education and recreational outings " may be working. According to the data, the number of suicides in the Air Force and Marine Corp dropped by more than 30 percent in 2021 compared with 2020, and the Navy saw a 10 percent decline. The Army saw a similar 30 percent decrease during the first six months of this year, compared with the same time period last year. The National Guard and the Reserves both saw a small dip in suicides, from 121 in 2020 to 119 in 2021. And there were also fewer Guard deaths in the first half of 2022, compared with last year. The Guard has worked over the last year to reduce suicides through outreach and other changes, including policies to destigmatize getting mental health help and a program that provides firearms locks for service members who keep weapons at home.