According to the report:
According to officials, $1.6 billion of that money would go toward materials to build the wall. That would initially be used for continuing the levy [sic] wall in the Rio Grande Valley of Texas and replacing existing fencing in El Paso and in San Diego.
The remaining $1 billion would go toward planning for the rest of the wall and other security measures.
The Times‘ report did not explain how many extra miles of border fences or walls would be built, or even how much of the money would be spent building a fence or wall, but it did report that:
Read more at Breitbart
the government intends to buy all sorts of equipment that will supplement or substitute for a physical wall. The budget request will allocate $239 million for aircraft and aviation sensors; $197 million for fixed surveillance technology, including towers, radar and cameras; and $202 million for what it described as “critical equipment” such as radios, computers and weapons … [plus] $111 million allocated for roads to gain access to parts of the border that are now hard to reach.