You will be given a context, a subject and a relation. Your task is to generate a question based on the subject and relation. The generated question should include the given subject. Try to use a minimum number of words that are not present in either context, subject or relation while generating question.
Q: Context : Armored vehicles designed specifically to counter the land mine threat were first used during the Rhodesian Bush War; the technology subsequently matured with the development of the South African-designed Casspir armored fighting vehicle, which inspired the United States MRAP program and was the basis for some of the program's vehicles.
Subject : MRAP
Relation : service entry
A:
What year was the service entry date for MRAP?