diff --git a/java/src/org/broadinstitute/sting/playground/gatk/walkers/validation/DeclareValidityWalker.java b/java/src/org/broadinstitute/sting/playground/gatk/walkers/validation/DeclareValidityWalker.java
new file mode 100644
index 000000000..d83fe88a2
--- /dev/null
+++ b/java/src/org/broadinstitute/sting/playground/gatk/walkers/validation/DeclareValidityWalker.java
@@ -0,0 +1,126 @@
+/*
+ * Copyright (c) 2010, The Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+package org.broadinstitute.sting.playground.gatk.walkers.validation;
+
+import com.sun.tools.corba.se.idl.constExpr.Not;
+import com.sun.tools.internal.xjc.reader.xmlschema.bindinfo.BIConversion;
+import org.broad.tribble.Feature;
+import org.broad.tribble.util.variantcontext.Genotype;
+import org.broad.tribble.util.variantcontext.VariantContext;
+import org.broad.tribble.vcf.*;
+import org.broadinstitute.sting.gatk.contexts.AlignmentContext;
+import org.broadinstitute.sting.gatk.contexts.ReferenceContext;
+import org.broadinstitute.sting.gatk.contexts.variantcontext.VariantContextUtils;
+import org.broadinstitute.sting.gatk.datasources.rmd.ReferenceOrderedDataSource;
+import org.broadinstitute.sting.gatk.refdata.RefMetaDataTracker;
+import org.broadinstitute.sting.gatk.walkers.*;
+import org.broadinstitute.sting.commandline.Argument;
+import org.broadinstitute.sting.commandline.Output;
+import org.broadinstitute.sting.utils.GenomeLoc;
+import org.broadinstitute.sting.utils.SampleUtils;
+import org.broadinstitute.sting.utils.bed.BedParser;
+import org.broadinstitute.sting.utils.vcf.VCFUtils;
+
+import java.io.PrintStream;
+import java.io.Writer;
+import java.util.*;
+
+
+/**
+ * Declares the validity of variants in a vcf as either true or false. For use with the IGV crowd-sourcing bed generation
+ */
+
+
+public class DeclareValidityWalker   extends RodWalker<Integer, Integer>{
+
+
+    @Output(doc = "Write bed to this file instead of standard out")
+    public PrintStream out;
+
+    @Argument(fullName = "DeclareFalse", shortName = "isFP",
+            doc = "Argument to create a bed file of with loci annotated as false positive", required = false)
+    boolean isFP = false;
+
+    @Argument(fullName = "Note", shortName = "N", doc = "Annotation to be included in FP field", required = false)
+    String Note =".";
+
+    @Argument(fullName = "Source", shortName = "s", doc = "Source of annotation", required = false)
+    String Source = ".";
+
+    @Override
+    public Integer reduceInit() {
+        return 0;  //To change body of implemented methods use File | Settings | File Templates.
+    }
+
+
+
+    public class ValidityDeclaration{
+        protected String contig;
+        protected long start;
+        protected long stop;
+        protected boolean TPorFP;
+        protected String Note;
+        protected String Source;
+        protected String Build;
+        protected String user;
+
+        public ValidityDeclaration(GenomeLoc Loc, Boolean TPorFP, String Note, String Source){   //Constructor expects  1 based
+            this.contig=Loc.getContig();
+            this.start=Loc.getStart()-1;
+            this.stop=Loc.getStop()-1;
+            this.TPorFP =TPorFP;
+            this.Note = Note;
+            this.Source = Source;
+            this.user = System.getenv("USER");
+            //is there a better way to get the build than this?:
+            if (this.contig.contains("chr")) {this.Build="hg18";}
+            else {this.Build="hg19";}
+        }
+        public String toString() {
+            return String.format("%s\t%d\t%d\t%b positive\t%s\t%s\t%s\t%s\n", contig, start, stop, TPorFP, user, Build, Note, Source);
+        }
+    }
+ /**
+     *
+     * @param tracker  the meta-data tracker
+     * @param ref      the reference base
+     * @param context  the context for the given locus
+     * @return 1 if the locus was successfully processed, 0 if otherwise
+     */
+     public Integer map(RefMetaDataTracker tracker, ReferenceContext ref, AlignmentContext context){
+         if ( tracker == null )
+            return 0;
+
+         Boolean tpOrFp = !isFP;
+         ValidityDeclaration bedLine = new ValidityDeclaration(ref.getLocus(), tpOrFp, Note, Source);
+         out.append(bedLine.toString());
+         return 1;
+     }
+
+    public Integer reduce(Integer counter, Integer sum) {
+        return counter+sum;
+    }
+
+}