HR 5122 PCS 
(c) REPORT.—The Secretary shall submit to the con-
gressional defense committees a report on the findings and 
conclusions of the milestone review required by subsection 
(a). The report shall include, and display, each of the as-
sessments required by subsection (a) and each of the de-
terminations required by subsection (b). 
(d) RESTRICTION
ON FUNDS EFFECTIVE FISCAL 
2009.—For fiscal years beginning with 2009, the Sec-
retary may not obligate any funds for the Future Combat 
Systems program until after the report required by sub-
section (c) is submitted. 
SEC. 215. INDEPENDENT COST ANALYSES FOR JOINT 
STRIKE FIGHTER ENGINE PROGRAM. 
(a) INDEPENDENT COST ANALYSES.—A comprehen-
sive and detailed cost analysis of the Joint Strike Fighter 
engine program shall be independently performed by the 
Comptroller General and by the Secretary of Defense, act-
ing through the Cost Analysis Improvement Group of the 
Office of the Secretary of Defense. The cost analysis shall 
cover— 
(1) an alternative under which the aircraft are 
capable of using the F135 engine only; 
(2) an alternative under which the aircraft are 
capable of using either the F135 engine or the F136 
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HR 5122 PCS 
engine, and is carried out on a competitive basis; 
and 
(3) any other alternative, whether competitive 
or sole source, that would reduce total life-cycle cost, 
improve program schedule, or both. 
(b) REPORTS.—Not later than March 15, 2007, each 
official specified in subsection (a) shall independently sub-
mit to the congressional defense committees a report on 
the cost analysis carried out by that official under sub-
section (a). Each report shall include each of the following 
matters: 
(1) The key assumptions used in carrying out 
the cost analysis. 
(2) The methodology and techniques used in 
carrying out the cost analysis. 
(3) For each alternative under subsection (a)— 
(A) a comparison of the life-cycle costs, in-
cluding costs in current and constant collars 
and a net-present-value analysis; and 
(B) estimates of— 
(i) supply, maintenance, and other op-
erations manpower required to support the 
alternative; 
(ii) the number of flight hours re-
quired to achieve engine maturity and in 
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what year that is expected to be achieved; 
and 
(iii) the total number of engines ex-
pected to be procured over the lifetime of 
the Joint Strike Fighter program. 
(4) The acquisition strategies that were used 
for, and the experience with respect to cost, sched-
ule, and performance under past acquisition pro-
grams for engines for tactical fighter aircraft, in-
cluding the F–15, F–16, F–18, and F–22. 
(5) A comparison of the experiences under past 
engine acquisition programs carried out on a sole- 
source basis, and those carried out on a competitive 
basis, with respect to performance, savings, main-
tainability, reliability, and technical innovation. 
(6) Conclusions and recommendations. 
(c) CERTIFICATION BY COMPTROLLER GENERAL.— 
In submitting the report required by subsection (b), the 
Comptroller General shall also submit a certification as 
to whether the Comptroller General had access to suffi-
cient information to enable the Comptroller General to 
make informed judgments on the matters required to be 
included in the report. 
(d) LIFE-CYCLE COSTS DEFINED.—In this section, 
the term ‘‘life-cycle costs’’ includes those elements of cost 
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that would be considered for a life-cycle cost analysis for 
a major defense acquisition program, such as procurement 
of engines, procurement of spare engines, and procure-
ment of engine components and parts, and also includes 
good-faith estimates of routine engine costs, such as per-
formance upgrades and component improvement, that his-
torically have occurred in tactical fighter engine programs. 
SEC. 216. DEDICATED AMOUNTS FOR IMPLEMENTING OR 
EVALUATING DD(X) AND CVN–21 PROPOSALS 
UNDER DEFENSE ACQUISITION CHALLENGE 
PROGRAM. 
(a) AMOUNTS REQUIRED.—Of the amounts appro-
priated pursuant to the authorization of appropriations in 
section 201(4) for research, development, test, and evalua-
tion, Defense-wide, $4,000,000 shall be available only to 
implement or evaluate challenge proposals specified in 
subsection (b). 
(b) CHALLENGE PROPOSALS COVERED.—A challenge 
proposal referred to in subsection (a) is a proposal under 
the Defense Acquisition Challenge Program established by 
section 2359b of title 10, United States Code, that relates 
to— 
(1) the DD(X) next-generation destroyer pro-
gram; or 
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(2) the CVN–21 next-generation aircraft carrier 
program. 
Subtitle C—Ballistic Missile 
Defense 
SEC. 221. FIELDING OF BALLISTIC MISSILE DEFENSE CAPA-
BILITIES. 
Upon approval by the Secretary of Defense, funds au-
thorized to be appropriated for fiscal years 2007 and 2008 
for research, development, test, and evaluation for the 
Missile Defense Agency may be used for the development 
and fielding of ballistic missile defense capabilities. 
SEC. 222. LIMITATION ON USE OF FUNDS FOR SPACE- 
BASED INTERCEPTOR. 
(a) LIMITATION.—No funds appropriated or other 
wise made available to the Department of Defense may 
be obligated or expended for the testing or deployment of 
a space-based interceptor until 90 days after the date on 
which a report described in subsection (c) is submitted. 
(b) SPACE-BASED
INTERCEPTOR
DEFINED.—For 
purposes of this section, the term ‘‘space-based inter-
ceptor’’ means a kinetic or directed energy weapon that 
is stationed on a satellite or orbiting platform and that 
is intended to destroy another satellite in orbit or a bal-
listic missile launched from earth. 
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