My son who is applying for the submarine service has recently had his medical with capita. A heart murmur was detected and we needed a echocardiogram and an ECG. The results of this was perfectly normal apart from an innocent heart murmur. We have had a paper review and after my son contacted his afco they informed him that it has been passed on for further investigation and we will hear in 4-6 weeks. Is this normal? Has anyone encounted a similar experience with a heart murmur? My son who is 16 has always had excellent health and only ever been to the doctors once in his life. Any comments would be greatly be appreciated.