Quarterly report pursuant to Section 13 or 15(d)

PROPERTY, PLANT AND EQUIPMENT

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PROPERTY, PLANT AND EQUIPMENT
 6 Months Ended
Jun. 30, 2017
Property, Plant and Equipment [Abstract]  
PROPERTY, PLANT AND EQUIPMENT
PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment as of June 30, 2017 and December 31, 2016 consist of the following (in millions):
 
2017
 
2016
Vehicles
$
8,879

 
$
8,638

Aircraft
15,678

 
15,653

Land
1,591

 
1,397

Buildings
3,571

 
3,439

Building and leasehold improvements
3,718

 
3,612

Plant equipment
8,714

 
8,430

Technology equipment
1,810

 
1,741

Equipment under operating leases
29

 
29

Construction-in-progress
1,598

 
735

 
45,588

 
43,674

Less: Accumulated depreciation and amortization
(25,747
)
 
(24,874
)
 
$
19,841

 
$
18,800


 
We continually monitor our aircraft fleet utilization in light of current and projected volume levels, aircraft fuel prices and other factors. Additionally, we monitor our other property, plant and equipment categories for any indicators that the carrying value of the assets may not be recoverable. No impairment charges on property, plant and equipment were recorded during the three and six months ended June 30, 2017 and 2016.