How do I get Indelocator?

It is a part of GATK distribution (although not officially supported by GATK team), and documentation and download instructions can be found at GATK Wiki.

If you are interested in the exact version of Indelocator used in "Sequence analysis of mutations and translocations across breast cancer subtypes" (submitted), please download this executable:

IndelGenotyper.36.3336-GenomeAnalysisTK.jar

Third-party libraries required by (and bundled with) the standard GATK distribution above may still be required.