LDT photometric data files have the .ldt filename extension. In 1988 CIBSE introduced a photometric file format called TM14, but this need not detain us. The format has not caught on in the lighting industry and in our many years of experience, we have never known a customer ask for a TM14 file.
Generally a letter of intent is not a legally binding contract. It just lays out the terms of the agreement so that both parties can see if they agree with the terms and are ready to sign a contract. The best way to write a letter of intent is to be specific on each of the points of the agreement.
The best thing you can do is to write as many positive letters as possible, and as often as possible. Soldiers look forward to daily mail call. BCT or Infantry OSUT is very demanding and challenging. Soldiers are sometimes expected to respond quickly and give 100 percent effort at all times.